/******************************************************************************

 MIT License

 Copyright (c) 2010 Daniel Lang - daniel@mavrick.id.au

 Permission is hereby granted, free of charge, to any person obtaining a copy
 of this software and associated documentation files (the "Software"), to deal
 in the Software without restriction, including without limitation the rights
 to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 copies of the Software, and to permit persons to whom the Software is
 furnished to do so, subject to the following conditions:

 The above copyright notice and this permission notice shall be included in
 all copies or substantial portions of the Software.

 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 THE SOFTWARE.

******************************************************************************/

function clearOptionList(selectId){
	$(selectId).empty();
}

function pauseComp(millis){
	date = new Date();
	var curDate = null;
	do { var curDate = new Date(); }
	while(curDate-date < millis);
} 

function addOption(selectId, txt, val, defSel){
	// if Safari/Konqueror
	if(window.webkit) {	
		var element = $(selectId);
		var newone = new Option(txt,val,defSel);
		element.add(newone,element.options[element.options.length]);
	// if Internet Explorer (any)
	} else if(window.ie) {
		var objOption = new Option(txt, val, defSel, defSel);
		$(selectId).options.add(objOption);
	// if Mozilla/Gecko/Opera
	} else {
		var objOption = new Option(txt, val, defSel);
		$(selectId).options.add(objOption);
	}
}

function deleteOption(id,i){ 
	var items = $(id).length;
	if(items>0){
		$(id).options[i] = null;
	}
}

function deleteSelectedOptions(id){
	var items = $(id).length;
	var i; for(i=items-1; i>=0; i--){
		if($(id).options[i].selected){
			deleteOption(id, i);
		}
	}
}

function moveOptions(from,to){
	var items = $(from).length;
	var txt; var val; var a = new Array();
	for (i=0; i<items; i++){
		if($(from).options[i].selected){
			txt = $(from).options[i].text;
			val = $(from).options[i].value;
			a[i] = $(from).options[i];
			addOption(to, txt, val, false);
		}
	}
	deleteSelectedOptions(from);
	sortOptions(to);
}

function moveAllOptions(from,to){
	var items = $(from).length;
	var txt; var val;
	for (i=0; i<items; i++){
		txt = $(from).options[i].text;
		val = $(from).options[i].value;
		addOption(to, txt, val, false);
		
	}
	sortOptions(to);
	clearOptionList(from);
}

function compareOptionText(a,b){
  /*
   * return >0 if a>b
   *         0 if a=b
   *        <0 if a<b
   */
  // textual comparison
  return a.text!=b.text ? a.text<b.text ? -1 : 1 : 0;
  // numerical comparison
//  return a.text - b.text;
}

function sortOptions(id){
	var items = $(id).length;
	var list = $(id);
	// create array and make copies of options in list
	var tmpArray = new Array(items);
	for ( i=0; i<items; i++ ){
		tmpArray[i] = new Option(list.options[i].text,list.options[i].value);
	}
	// sort options using given function
	tmpArray.sort(compareOptionText);
	// make copies of sorted options back to list
	for ( i=0; i<items; i++ ) {
		list.options[i] = new Option(tmpArray[i].text,tmpArray[i].value);
	}
}

function selectAllOptions(id){
	var items = $(id).length;
	for (i=0; i<items; i++){
		$(id).options[i].selected = true;
	}
}

/* base64_encode && base64_decode */

//First things first, set up our array that we are going to use.
var keyStr = "ABCDEFGHIJKLMNOPQRSTUVWXYZ" + //all caps
"abcdefghijklmnopqrstuvwxyz" + //all lowercase
"0123456789+/="; // all numbers plus +/=
//Heres the encode function
function base64_encode(inp){
	var out = ""; //This is the output
	var chr1, chr2, chr3 = ""; //These are the 3 bytes to be encoded
	var enc1, enc2, enc3, enc4 = ""; //These are the 4 encoded bytes
	var i = 0; //Position counter
	do { //Set up the loop here
	chr1 = inp.charCodeAt(i++); //Grab the first byte
	chr2 = inp.charCodeAt(i++); //Grab the second byte
	chr3 = inp.charCodeAt(i++); //Grab the third byte
	//Here is the actual base64 encode part.
	//There really is only one way to do it.
	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;
	}
	//Lets spit out the 4 encoded bytes
	out = out + keyStr.charAt(enc1) + keyStr.charAt(enc2) + keyStr.charAt(enc3) +
	keyStr.charAt(enc4);
	// OK, now clean out the variables used.
	chr1 = chr2 = chr3 = "";
	enc1 = enc2 = enc3 = enc4 = "";
	} while (i < inp.length); //And finish off the loop
	//Now return the encoded values.
	return out;
}
//Heres the decode function
function base64_decode(inp){
	var out = ""; //This is the output
	var chr1, chr2, chr3 = ""; //These are the 3 decoded bytes
	var enc1, enc2, enc3, enc4 = ""; //These are the 4 bytes to be decoded
	var i = 0; //Position counter
	// remove all characters that are not A-Z, a-z, 0-9, +, /, or =
	var base64test = /[^A-Za-z0-9\+\/\=]/g;
	if (base64test.exec(inp)) { //Do some error checking
	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.");
	}
	inp = inp.replace(/[^A-Za-z0-9\+\/\=]/g, "");
	do { //Here’s the decode loop.
	//Grab 4 bytes of encoded content.
	enc1 = keyStr.indexOf(inp.charAt(i++));
	enc2 = keyStr.indexOf(inp.charAt(i++));
	enc3 = keyStr.indexOf(inp.charAt(i++));
	enc4 = keyStr.indexOf(inp.charAt(i++));
	//Heres the decode part. There’s really only one way to do it.
	chr1 = (enc1 << 2) | (enc2 >> 4);
	chr2 = ((enc2 & 15) << 4) | (enc3 >> 2);
	chr3 = ((enc3 & 3) << 6) | enc4;
	//Start to output decoded content
	out = out + String.fromCharCode(chr1);
	if (enc3 != 64) {
	out = out + String.fromCharCode(chr2);
	}
	if (enc4 != 64) {
	out = out + String.fromCharCode(chr3);
	}
	//now clean out the variables used
	chr1 = chr2 = chr3 = "";
	enc1 = enc2 = enc3 = enc4 = "";
	} while (i < inp.length); //finish off the loop
	//Now return the decoded values.
	return out;
}