// JavaScript Document
var tmp_img1=new Image;
var tmp_img2=new Image;
tmp_img1.src='/img/navmenu_bg_a.png';
tmp_img2.src='/img/navmenu_bg_l_a.png';

function ChangeBG(event,on,left) {
	source=(event.srcElement?event.srcElement:event.target);
	while (source.tagName.toLowerCase()!="div")source=source.parentElement||source.parentNode;
	source.style.background=(on?'url(/img/navmenu_bg_a.png)':'none');
	if(left)document.getElementById('nav_menu_left').style.background=(on?'url(/img/navmenu_bg_l_a.png)':'url(/img/navmenu_bg_l.png)');
	}