function show_submenu() {
	document.getElementById('cat_submenu').style.display='block';	
}
function hide_submenu() {	
	document.getElementById('cat_submenu').style.display='none';
}
function move_submenu() {
	document.getElementById('cat_submenu').style.left=169;
	document.getElementById('cat_submenu').style.top=101;
}