function iecompattest()
{
	return (document.compatMode && document.compatMode!="BackCompat")? document.documentElement : document.body;
}

function showall()
{
	var category = document.getElementById('all_category');
	category.style.left = startX;
	category.style.top = startY;
	var _cur_state = category.style.display;
	if (_cur_state == 'none')
		category.style.display = "block";
	else
		category.style.display = "none";
}

var iecompatible = iecompattest();
var ie5=document.all&&document.getElementById;
var ns6=document.getElementById&&!document.all;
var startX=ns6 ? ((window.innerWidth-750) / 2 + 250)+"px" : ((iecompatible.clientWidth-750) / 2 + 250)+"px";
var startY=ns6 ? "48px" : "55px";