//*************************************************************************************
//*************************************************************************************
//*  Encrypt String
//*************************************************************************************
//*************************************************************************************

function encryptString(input) {

     input = escape(input);
     var output = "";
     var chr1, chr2, chr3 = "";
     var enc1, enc2, enc3, enc4 = "";
     var i = 0;

     do {
        chr1 = input.charCodeAt(i++);
        chr2 = input.charCodeAt(i++);
        chr3 = input.charCodeAt(i++);

        enc1 = chr1 >> 2;
        enc2 = ((chr1 & 3) << 4) | (chr2 >> 4);
        enc3 = ((chr2 & 15) << 2) | (chr3 >> 6);
        enc4 = chr3 & 63;

        if (isNaN(chr2)) {
           enc3 = enc4 = 64;
        } else if (isNaN(chr3)) {
           enc4 = 64;
        }

        output = output +
           keyStr.charAt(enc1) +
           keyStr.charAt(enc2) +
           keyStr.charAt(enc3) +
           keyStr.charAt(enc4);
        chr1 = chr2 = chr3 = "";
        enc1 = enc2 = enc3 = enc4 = "";
     } while (i < input.length);

     return output;
  }

  function decryptString(input) {
     var output = "";
     var chr1, chr2, chr3 = "";
     var enc1, enc2, enc3, enc4 = "";
     var i = 0;

     // remove all characters that are not A-Z, a-z, 0-9, +, /, or =
     var base64test = /[^A-Za-z0-9\+\/\=]/g;
     if (base64test.exec(input)) {
        alert("There were invalid base64 characters in the input text.\n" +
              "Valid base64 characters are A-Z, a-z, 0-9, '+', '/',and '='\n" +
              "Expect errors in decoding.");
     }
     input = input.replace(/[^A-Za-z0-9\+\/\=]/g, "");

     do {
        enc1 = keyStr.indexOf(input.charAt(i++));
        enc2 = keyStr.indexOf(input.charAt(i++));
        enc3 = keyStr.indexOf(input.charAt(i++));
        enc4 = keyStr.indexOf(input.charAt(i++));

        chr1 = (enc1 << 2) | (enc2 >> 4);
        chr2 = ((enc2 & 15) << 4) | (enc3 >> 2);
        chr3 = ((enc3 & 3) << 6) | enc4;

        output = output + String.fromCharCode(chr1);

        if (enc3 != 64) {
           output = output + String.fromCharCode(chr2);
        }
        if (enc4 != 64) {
           output = output + String.fromCharCode(chr3);
        }

        chr1 = chr2 = chr3 = "";
        enc1 = enc2 = enc3 = enc4 = "";

     } while (i < input.length);

     return unescape(output);
  }


//*************************************************************************************
//*************************************************************************************
//*  Generic Validation of Text
//*************************************************************************************
//*************************************************************************************
function validateText (strVal, intMin, intMax) {

	var intFail = 0;
	var strFailureText = '';

	//Check it is not too long
	if (strVal.length > intMax) {

		strFailureText = strFailureText + 'Too Long. ';
		intFail = 1;
	}

	//Check it is not too short
	if (strVal.length < intMin) {

		strFailureText = strFailureText + 'Too Short. ';
		intFail = 1;
	}

	//If it failed, return a failure
	if (intFail == 1) {

		return strFailureText;
	} else {

		return 'SUCCESS';
	}
}



//*************************************************************************************
//*  Generic wrapper for validating input text and returning the validation
//*************************************************************************************
//*************************************************************************************

function validateScreenName (objIn, objOut, objButton) {

	var strResponse;

	objIn = document.getElementById(objIn);
	objButton = document.getElementById(objButton);
	objOut = document.getElementById(objOut);

	strInput = objIn.value;
	strResponse = validateText (strInput, 4, 20);

	if (strResponse != 'SUCCESS') {

		objOut.innerText = strResponse + ' ' + strInput.length + ' / 20 characters';
		objButton.disabled=true;
	} else if (checkAlphaNumeric (strInput) != true) {

		objOut.innerText = ' Letters, numbers, and _- only';
		objButton.disabled=true;
	} else {

		//All is well
		objButton.disabled=false;
		objOut.innerText = '';
	}
}

//*************************************************************************************
//*  Check for alphanumeric
//*************************************************************************************
//*************************************************************************************

function checkAlphaNumeric (strIn) {

	if ( !/^[\w-]+$/i.test(strIn)) {

		return false;
	} else {

		return true;
	}
}

//*************************************************************************************
//*************************************************************************************
//*  Generic wrapper for validating input text and returning the validation
//*************************************************************************************
//*************************************************************************************

function validateComment (objIn, objOut, objButton) {

	var strResponse;

	objIn = document.getElementById(objIn);
	objButton = document.getElementById(objButton);
	objOut = document.getElementById(objOut);

	strInput = objIn.value;
	strResponse = validateText (strInput, 5, 4000);

	if (strResponse == 'SUCCESS') {

		objButton.disabled=false;
		objOut.innerText = strInput.length + ' / 4000 characters';
	} else {

		objOut.innerText = strResponse + ' ' + strInput.length + ' / 4000 characters';
		objButton.disabled=true;
	}

	return false;
}

//*************************************************************************************
//*************************************************************************************
//*  Generic wrapper for validating input text and returning the validation for a set length
//*************************************************************************************
//*************************************************************************************

function validateCommentLength (objIn, objOut, objButton, objMin, objMax) {

	var strResponse;

	objIn = document.getElementById(objIn);
	objButton = document.getElementById(objButton);
	objOut = document.getElementById(objOut);

	strInput = objIn.value;
	strResponse = validateText (strInput, objMin, objMax);

	if (strResponse == 'SUCCESS') {

		objButton.disabled=false;
		objOut.innerText = strInput.length + ' / '+objMax+' characters';
	} else {

		objOut.innerText = strResponse + ' ' + strInput.length + ' / '+objMax+' characters';
		objButton.disabled=true;
	}

	return false;
}

//*************************************************************************************
//*************************************************************************************
//*  Generic wrapper for validating input text and returning the validation for a set length
//*************************************************************************************
//*************************************************************************************

function showLength (objIn, objOut, objMin, objMax) {

	var strResponse;

	objIn = document.getElementById(objIn);
	objOut = document.getElementById(objOut);

	strInput = objIn.value;
	strResponse = validateText (strInput, objMin, objMax);

	if (strResponse == 'SUCCESS') {
		objOut.innerText = strInput.length + ' / '+objMax+' characters';
		objOut.style.color = '#000000';
	} else {
		objOut.innerText = strResponse + ' ' + strInput.length + ' / '+objMax+' characters';
		objOut.style.color = '#ff0000';
	}

	return false;
}



//*************************************************************************************
//*************************************************************************************
//*  popups
//*************************************************************************************
//*************************************************************************************


function libPopup(id) {

grayOut(true);

	var offx = 200;
	var offy = -50;

  var scrolledX, scrolledY;
 if( self.pageYOffset ) {
   scrolledX = self.pageXOffset;
   scrolledY = self.pageYOffset;
 } else if( document.documentElement && document.documentElement.scrollTop ) {
   scrolledX = document.documentElement.scrollLeft;
   scrolledY = document.documentElement.scrollTop;
 } else if( document.body ) {
   scrolledX = document.body.scrollLeft;
   scrolledY = document.body.scrollTop;
 }

 var centerX, centerY;
 if( self.innerHeight ) {
   centerX = self.innerWidth;
   centerY = self.innerHeight;
 } else if( document.documentElement && document.documentElement.clientHeight ) {
   centerX = document.documentElement.clientWidth;
   centerY = document.documentElement.clientHeight;
 } else if( document.body ) {
   centerX = document.body.clientWidth;
   centerY = document.body.clientHeight;
 }

 var leftOffset = scrolledX + offx;
 var topOffset = scrolledY + offy;

 //var leftOffset = scrolledX + (centerX - offx) / 2;
 //var topOffset = scrolledY + (centerY - offy) / 2;

 document.getElementById("libPopup"+id+"").style.top = topOffset + "px";
 document.getElementById("libPopup"+id+"").style.left = leftOffset + "px";


 document.getElementById("libPopup"+id+"").style.display = "block";
 document.body.onscroll = function(){

  var scrolledX, scrolledY;
 if( self.pageYOffset ) {
   scrolledX = self.pageXOffset;
   scrolledY = self.pageYOffset;
 } else if( document.documentElement && document.documentElement.scrollTop ) {
   scrolledX = document.documentElement.scrollLeft;
   scrolledY = document.documentElement.scrollTop;
 } else if( document.body ) {
   scrolledX = document.body.scrollLeft;
   scrolledY = document.body.scrollTop;
 }

 var centerX, centerY;
 if( self.innerHeight ) {
   centerX = self.innerWidth;
   centerY = self.innerHeight;
 } else if( document.documentElement && document.documentElement.clientHeight ) {
   centerX = document.documentElement.clientWidth;
   centerY = document.documentElement.clientHeight;
 } else if( document.body ) {
   centerX = document.body.clientWidth;
   centerY = document.body.clientHeight;
 }

 var leftOffset = scrolledX + offx;
 var topOffset = scrolledY + offy;

 document.getElementById("libPopup"+id+"").style.top = topOffset + "px";
 document.getElementById("libPopup"+id+"").style.left = leftOffset + "px";

 };

 /*
 window.onscroll = function(){

	 var scrolledX, scrolledY;
 if( self.pageYOffset ) {
   scrolledX = self.pageXOffset;
   scrolledY = self.pageYOffset;
 } else if( document.documentElement && document.documentElement.scrollTop ) {
   scrolledX = document.documentElement.scrollLeft;
   scrolledY = document.documentElement.scrollTop;
 } else if( document.body ) {
   scrolledX = document.body.scrollLeft;
   scrolledY = document.body.scrollTop;
 }

 var centerX, centerY;
 if( self.innerHeight ) {
   centerX = self.innerWidth;
   centerY = self.innerHeight;
 } else if( document.documentElement && document.documentElement.clientHeight ) {
   centerX = document.documentElement.clientWidth;
   centerY = document.documentElement.clientHeight;
 } else if( document.body ) {
   centerX = document.body.clientWidth;
   centerY = document.body.clientHeight;
 }

 var leftOffset = scrolledX + offx;
 var topOffset = scrolledY + offy;

 document.getElementById("libPopup"+id+"").style.top = topOffset + "px";
 document.getElementById("libPopup"+id+"").style.left = leftOffset + "px";

	};

	*/
}



//*************************************************************************************
//*************************************************************************************
//*  Greys out the background for a popup box
//*************************************************************************************
//*************************************************************************************


	function grayOut(vis, options) {
  // Pass true to gray out screen, false to ungray
  // options are optional.  This is a JSON object with the following (optional) properties
  // opacity:0-100         // Lower number = less grayout higher = more of a blackout
  // zindex: #             // HTML elements with a higher zindex appear on top of the gray out
  // bgcolor: (#xxxxxx)    // Standard RGB Hex color code
  // grayOut(true, {'zindex':'50', 'bgcolor':'#0000FF', 'opacity':'70'});
  // Because options is JSON opacity/zindex/bgcolor are all optional and can appear
  // in any order.  Pass only the properties you need to set.
  var options = options || {};
  var zindex = options.zindex || 50;
  var opacity = options.opacity || 40;
  var opaque = (opacity / 100);
  var bgcolor = options.bgcolor || '#000000';
  var dark=document.getElementById('darkenScreenObject');
  if (!dark) {
    // The dark layer doesn't exist, it's never been created.  So we'll
    // create it here and apply some basic styles.
    // If you are getting errors in IE see: http://support.microsoft.com/default.aspx/kb/927917
    var tbody = document.getElementsByTagName("body")[0];
    var tnode = document.createElement('div');           // Create the layer.
        tnode.style.position='absolute';                 // Position absolutely
        tnode.style.top='0px';                           // In the top
        tnode.style.left='0px';                          // Left corner of the page
        tnode.style.overflow='hidden';                   // Try to avoid making scroll bars
        tnode.style.display='none';                      // Start out Hidden
        tnode.id='darkenScreenObject';                   // Name it so we can find it later
    tbody.appendChild(tnode);                            // Add it to the web page
    dark=document.getElementById('darkenScreenObject');  // Get the object.
  }
  if (vis) {
    // Calculate the page width and height
    if( document.body && ( document.body.scrollWidth || document.body.scrollHeight ) ) {
        var pageWidth = document.body.scrollWidth+'px';
        var pageHeight = document.body.scrollHeight+'px';
    } else if( document.body.offsetWidth ) {
      var pageWidth = document.body.offsetWidth+'px';
      var pageHeight = document.body.offsetHeight+'px';
    } else {
       var pageWidth='100%';
       var pageHeight='100%';
    }
    //set the shader to cover the entire page and make it visible.
    dark.style.opacity=opaque;
    dark.style.MozOpacity=opaque;
    dark.style.filter='alpha(opacity='+opacity+')';
    dark.style.zIndex=zindex;
    dark.style.backgroundColor=bgcolor;
    dark.style.width= pageWidth;
    dark.style.height= pageHeight;
    dark.style.display='block';
  } else {
     dark.style.display='none';
  }
}

function closePopup(num){

	document.getElementById("libPopup"+num+"").style.display="none";
	grayOut(false);

}

//*************************************************************************************
//*************************************************************************************
//*  Report Spam
//*************************************************************************************
//*************************************************************************************


function reportSpam(f_session, f_div){

	if ( confirm('Do you want to report this page as containing spam?') ) {

		//load the 'loading' image
		$("#spamDiv"+f_div+"").replaceWith('<div id="spamDiv'+f_div+'"><img src="'+js_globalsite+'images/general/loading_sm.gif"></div>');

		//report the spam
		$("#spamDiv"+f_div+"").load("ajaxactionsall.php?ajaxcase="+004+"&session"+f_session+"");

		return null;

	} else {
		return null;
	}

}

//*************************************************************************************
//*************************************************************************************
//*  Show Hide comment box
//*************************************************************************************
//*************************************************************************************



function showCommentBox(){
	$('#feedCommentBox').slideDown();
}

function hideCommentBox(){
	$('#feedCommentBox').slideUp();
}

//*************************************************************************************
//*************************************************************************************
//*  Help javascript
//*************************************************************************************
//*************************************************************************************

function helpItemToggle(item){

	$("#help-"+item+"").slideToggle();

        //mark question as read
        $("#help-dummy").load(""+js_globalsite+"ajaxactionsall.php?ajaxcase="+007+"&num1="+item+"");
}

//*************************************************************************************
//*************************************************************************************
//*  Help javascript
//*************************************************************************************
//*************************************************************************************

function helpClose(helpID){
	
	$("#helpBox"+helpID+"").slideUp();
	$("#helpBox"+helpID+"").load(""+js_globalsite+"ajaxactionsall.php?ajaxcase="+008+"&num1="+helpID+"");
	
}

//*************************************************************************************
//*************************************************************************************
//*  Generic Popups
//*************************************************************************************
//*************************************************************************************

function loadGenericPopup(p, str1, str2, str3, str4, num1, num2, num3, num4){

	//load the 'loading' image
	$("#genericPopupContents").replaceWith('<div id="genericPopupContents"><img src="'+js_globalsite+'images/general/loading_sm.gif"></div>');
	
	//load the popup
	$("#genericPopupContents").load(""+js_globalsite+"ajaxpopups.php?p="+p+"&str1="+str1+"&str2="+str2+"&str3="+str3+"&str4="+str4+"&num1="+num1+"&num2="+num2+"&num3="+num3+"&num4="+num4+"");
	
	libPopup(100);
}

function loadHelpPopup(question){

	//load the 'loading' image
	$("#genericPopupContents").replaceWith('<div id="genericPopupContents"><img src="'+js_globalsite+'images/general/loading_sm.gif"></div>');
	
	//load the popup
	$("#genericPopupContents").load(""+js_globalsite+"ajaxpopups.php?p=5&num1="+question+"");
	
	libPopup(100);
}

function closeGenericPopup(){

	//reset the popup content
	$("#genericPopupContents").replaceWith('<div id="genericPopupContents"></div>');
	
	//reset the popup title
	$("#genericPopupTitle").replaceWith('<div id="genericPopupTitle">&nbsp;</div>');

	//close the popup
	closePopup(100);
	
}

function updateGenericPopupTitle(title){
	
	//update the popup title
	$("#genericPopupTitle").replaceWith('<div id="genericPopupTitle">'+title+'</div>');
	
}

//*************************************************************************************
//*************************************************************************************
//*  Text box select all
//*************************************************************************************
//*************************************************************************************


function SelectAll(id)
{
    document.getElementById(id).focus();
    document.getElementById(id).select();
}

//*************************************************************************************
//*************************************************************************************
//*  Image upload disclaimer
//*************************************************************************************
//*************************************************************************************


function showUploadButton(){

	checked = document.imageDisclaimerForm.check.checked;

	if (checked == 1){
		$("#imageUploadButton").slideDown();
	} else {
		$("#imageUploadButton").slideUp();
	}
}

function showUploadDisclaimer(){

	$("#imageUploadDisclaimer").slideDown();

}

//*************************************************************************************
//*************************************************************************************
//*  Show Book Details
//*************************************************************************************
//*************************************************************************************



function showDetails(){

	$('#details_container').height("");
	$("#showDetailsButton").hide();
	$("#hideDetailsButton").show();
	
}

function hideDetails(){

	$('#details_container').height(126);
	$("#showDetailsButton").show();
	$("#hideDetailsButton").hide();
	
}


function checkDetailsBox(){ 
	
	var divHeight = $('#details_container').height();
	if (divHeight > 150){
		$('#details_container').height(126);
		$("#showDetailsButton").show();
	}
		
}