browser_name = navigator.appName; 

function show_menu(id) {
	left = document.getElementById("m_" + id).offsetLeft;
	topp = document.getElementById("m_" + id).offsetTop;
	if (id == "eb" || id == "it") {
		main_div_height = 77;
	} else {
		main_div_height = 122;
	}
	document.getElementById("sub_" + id).style.display = "block";
	document.getElementById("sub_" + id).style.left = left;
	document.getElementById("sub_" + id).style.top = topp + main_div_height; 
}
function hide_menu(id) {
	document.getElementById("sub_" + id).style.display = "none";
}