function openMenu(box,t_height){
	last_height=120+(t_height)*30;
	parent.document.getElementById(box).style.visibility="visible";
	parent.document.getElementById(box).style.top=last_height;
	parent.document.getElementById(box).style.left=(parent.document.body.offsetWidth/2)-262;
	parent.document.getElementById(box).style.filter="alpha(opacity=80)";

}

function closeMenu(box){
	parent.document.getElementById(box).style.visibility="hidden";
}