var cats_node = new Array;
var cats = 0;

function Show_Cat() {
	for (i=1; i<=cats; i++) {
		if (this.id == "id"+i && cats_node[i].style.display != "block") {
			cats_node[i].style.display = "block";
		} else {
			cats_node[i].style.display = "none";
		}
	}
}
function Hide_Cat() {
	i = 1;
	curr_node = document.getElementById("id"+i);
	while (curr_node != null) {
		curr_node.onclick = Show_Cat;
		cats_node[i] = document.getElementById("id"+i+"a");
		i++;
		curr_node = document.getElementById("id"+i);
	}
	cats = i-1;
	
	Show_Cat();
}

if(window.attachEvent) window.attachEvent("onload", Hide_Cat);
else if(window.addEventListener) window.addEventListener("load", Hide_Cat, false);