/* C# StringBuilder */
function StringBuilder() {
	this.__strings__ = new Array;
}
StringBuilder.prototype.append = function (str) {
	this.__strings__.push(str);
};
StringBuilder.prototype.toString = function () {
	return this.__strings__.join("");
};

/* push functionality for browsers that don't support it (like mac ie) */
if (typeof Array.prototype.push=="undefined")
{
	Array.prototype.push=function()
	{
		var i=0;
		b=this.length,a=arguments;
		for(i;i<a.length;i++)this[b+i]=a[i];
		return this.length;
	}
}

/*
	Returns a collection of elements for the document that match a class name
*/

function getElementsByClassName(classname) {
	var elements = new Array();
	var tags = (document.getElementsByTagName) ? document.getElementsByTagName("*") : document.all;
	for (var i=tags.length-1; i>0; i--) 
	{
		if (tags[i].className == classname) elements.push(tags[i]);
	}
	return elements;
}


// Gets a querystring value
function getQueryVariable(variable) 
{
	var query = window.location.search.substring(1);
	var vars = query.split("&");
	for (var i=0;i<vars.length;i++) 
	{
		var pair = vars[i].split("=");
		if (pair[0] == variable) 
		{
			return pair[1];
		}
	}   
}

//*** This code is copyright 2003 by Gavin Kistner, gavin@refinery.com
//*** It is covered under the license viewable at http://phrogz.net/JS/_ReuseLicense.txt
//*** Reuse or modification is free provided you abide by the terms of that license.
//*** (Including the first two lines above in your source code satisfies the conditions.)

//***Cross browser attach event function. For 'evt' pass a string value with the leading "on" omitted
//***e.g. AttachEvent(window,'load',MyFunctionNameWithoutParenthesis,false);

function AttachEvent(obj,evt,fnc,useCapture){
	if (!useCapture) useCapture=false;
	if (obj.addEventListener){
		obj.addEventListener(evt,fnc,useCapture);
		return true;
	} else if (obj.attachEvent) return obj.attachEvent("on"+evt,fnc);
	else{
		MyAttachEvent(obj,evt,fnc);
		obj['on'+evt]=function(){ MyFireEvent(obj,evt) };
	}
} 

//The following are for browsers like NS4 or IE5Mac which don't support either
//attachEvent or addEventListener

function MyAttachEvent(obj,evt,fnc){
	if (!obj.myEvents) obj.myEvents={};
	if (!obj.myEvents[evt]) obj.myEvents[evt]=[];
	var evts = obj.myEvents[evt];
	evts[evts.length]=fnc;
}

function MyFireEvent(obj,evt){
	if (!obj || !obj.myEvents || !obj.myEvents[evt]) return;
	var evts = obj.myEvents[evt];
	for (var i=0,len=evts.length;i<len;i++) evts[i]();
}


//*** This code is copyright 2002-2003 by Gavin Kistner, gavin@refinery.com
//*** It is covered under the license viewable at http://phrogz.net/JS/_ReuseLicense.txt
//*** Reuse or modification is free provided you abide by the terms of that license.
//*** (Including the first two lines above in your source code satisfies the conditions.)

// Add a new stylesheet to the document;
// url [optional] A url to an external stylesheet to use
// idx [optional] The index in document.styleSheets to insert the new sheet before
function AddStyleSheet(url,idx){
	var css,before=null,head=document.getElementsByTagName("head")[0];

	if (document.createElement){
		if (url){
			css = document.createElement('link');
			css.rel  = 'stylesheet';
			css.href = url;
		} else css = document.createElement('style');
		css.media = 'all';
		css.type  = 'text/css';

		if (idx>=0){
			for (var i=0,ct=0,len=head.childNodes.length;i<len;i++){
				var el = head.childNodes[i];
				if (!el.tagName) continue;
				var tagName = el.tagName.toLowerCase();
				if (ct==idx){
					before = el;
					break;
				}
				if (tagName=='style' || tagName=='link' && (el.rel && el.rel.toLowerCase()=='stylesheet' || el.type && el.type.toLowerCase()=='text/css') ) ct++;
			}
		}
		head.insertBefore(css,before);

		return document.styleSheets[before?idx:document.styleSheets.length-1];
	} else return alert("I can't create a new stylesheet for you. Sorry.");
}
// e.g. var newBlankSheetAfterAllOthers = AddStyleSheet(); 
// e.g. var newBlankSheetBeforeAllOthers = AddStyleSheet(null,0);
// e.g. var externalSheetAfterOthers = AddStyleSheet('http://phrogz.net/JS/Classes/docs.css');
// e.g. var externalSheetBeforeOthers = AddStyleSheet('http://phrogz.net/JS/Classes/docs.css',0);


// Cross-browser method for inserting a new rule into an existing stylesheet.
// ss       - The stylesheet to stick the new rule in
// selector - The string value to use for the rule selector
// styles   - The string styles to use with the rule
function AddRule(ss,selector,styles){
	if (!ss) return false;
	if (ss.insertRule) return ss.insertRule(selector+' {'+styles+'}',ss.cssRules.length);
	if (ss.addRule){
		ss.addRule(selector,styles);
		return true;
	}
	return false;
}

// e.g. AddRule( document.styleSheets[0] , 'a:link' , 'color:blue; text-decoration:underline' );
// e.g. AddRule( AddStyleSheet() , 'hr' , 'display:none' );

//*** This code is copyright 2002-2003 by Gavin Kistner and Refinery; www.refinery.com
//*** It is covered under the license viewable at http://phrogz.net/JS/_ReuseLicense.txt
//*** Reuse or modification is free provided you abide by the terms of that license.
//*** (Including the first two lines above in your source code satisfies the conditions.)

//***Adds a new class to an object, preserving existing classes
function AddClass(obj,cName){ KillClass(obj,cName); return obj && (obj.className+=(obj.className.length>0?' ':'')+cName); }

//***Removes a particular class from an object, preserving other existing classes.
function KillClass(obj,cName){ return obj && (obj.className=obj.className.replace(new RegExp("^"+cName+"\\b\\s*|\\s*\\b"+cName+"\\b",'g'),'')); }

//***Returns true if the object has the class assigned, false otherwise.
function HasClass(obj,cName){ return (!obj || !obj.className)?false:(new RegExp("\\b"+cName+"\\b")).test(obj.className) }