/*
	|==========================================================
	| Doors Opening
	|----------------------------------------------------------
	| Copyright (c) 2006, metro55
	|----------------------------------------------------------
	| File: /htdocs/public/javascript/common.js
	|----------------------------------------------------------
	| Purpose: Common and useful javascript functions
	|==========================================================
	*/
	
	// http://simon.incutio.com/archive/2004/05/26/addLoadEvent
	function addLoadEvent(func) {
		var oldonload = window.onload;
		
		if (typeof window.onload != 'function') {
			window.onload = func;
		} else {
			window.onload = function() {
		  		oldonload();
		  		func();
			}
		}
	}
	
	// http://www.dustindiaz.com/dhtml-expand-and-collapse-div-menu/
	function showHide(obj) {
		var el = document.getElementById(obj);
		if ( el.style.display != 'none' ) {
			el.style.display = 'none';
		} else {
			el.style.display = 'block';
		}
	}