/******************************************
Name:			base.js
Date:			29/05/2008
Author:			Andrei Vais
Description:	Base Javascript file
******************************************/

/****
Used for executing multiple functions on page load.
****/
function addLoadEvent(func)
{
	var oldonload = window.onload;

	if (typeof window.onload != 'function')
		window.onload = func;
	else
	{
		window.onload = function()
		{
			oldonload();
			func();
		}
	}
}

function addUnloadEvent(func)
{
	var oldonload = window.onunload;

	if (typeof window.onunload != 'function')
		window.onunload = func;
	else
	{
		window.onunload = function()
		{
			oldonunload();
			func();
		}
	}
}

/*
	Written by Jonathan Snook, http://www.snook.ca/jonathan
	Add-ons by Robert Nyman, http://www.robertnyman.com
*/

function getElementsByClassName(oElm, strTagName, oClassNames){
	var arrElements = (strTagName == "*" && oElm.all)? oElm.all : oElm.getElementsByTagName(strTagName);
	var arrReturnElements = new Array();
	var arrRegExpClassNames = new Array();
	if(typeof oClassNames == "object"){
		for(var i=0; i<oClassNames.length; i++){
			arrRegExpClassNames.push(new RegExp("(^|\\s)" + oClassNames[i].replace(/\-/g, "\\-") + "(\\s|$)"));
		}
	}
	else{
		arrRegExpClassNames.push(new RegExp("(^|\\s)" + oClassNames.replace(/\-/g, "\\-") + "(\\s|$)"));
	}
	var oElement;
	var bMatchesAll;
	for(var j=0; j<arrElements.length; j++){
		oElement = arrElements[j];
		bMatchesAll = true;
		for(var k=0; k<arrRegExpClassNames.length; k++){
			if(!arrRegExpClassNames[k].test(oElement.className)){
				bMatchesAll = false;
				break;
			}
		}
		if(bMatchesAll){
			arrReturnElements.push(oElement);
		}
	}
	return (arrReturnElements)
}