function GetDiv(Div_ID)
	{
	/* MSIE, Konqueror, Opera : */
  		if (window.document.all)
    		return eval("window.document.all."+Div_ID);

	/* Netscape6/Mozilla : */
  		if (typeof(window.document.getElementById)=="function") {
    		return window.document.getElementById(Div_ID);
		}
		return eval("window.document."+Div_ID);
	}

	function zoom(id,w,h,url)
	{ 
		x = (640 - w)/2;
		y = (480 - h)/2;

    	if (screen) {
       	 	y = (screen.availHeight - h)/2;
        	x = (screen.availWidth - w)/2;
    	}
	
		remote = window.open(url,id,"menubar=no,toolbar=no,status=no,scrollbar=no,width="+w+",height="+h+",screenX="+x+",screenY="+y+",top="+y+",left="+x+"");
		remote.focus();
	}
	
	function hide_menu_img(i) {
		GetDiv("menu"+i+"2").style.visibility = "visible";
		GetDiv("menu"+i+"3").style.visibility = "hidden";
		GetDiv("umenu"+i).style.zIndex = 0;
	}
	
	function show_menu_img(i) {
		GetDiv("menu"+i+"2").style.visibility = "hidden";
		GetDiv("menu"+i+"3").style.visibility = "visible";
		GetDiv("umenu"+i).style.zIndex = 100;
	}