function showDropMenu(which) {
        document.getElementById(which).style.display = "block";
}
function hideDropMenu(which) {
        document.getElementById(which).style.display = "none";
}
function showDiv(which) {
        document.getElementById(which).style.display = "block";
}
function hideDiv(which) {
        document.getElementById(which).style.display = "none";
}
function loadXMLDoc(url,targetDiv) {
	if (window.XMLHttpRequest) {
		// code for IE7+, Firefox, Chrome, Opera, Safari
		xmlhttp=new XMLHttpRequest();
	}
	else {
		// code for IE6, IE5
		xmlhttp=new ActiveXObject("Microsoft.XMLHTTP");
	}
	xmlhttp.open("GET",url,false);
	xmlhttp.send(null);
	if (targetDiv != null)
		document.getElementById(targetDiv).innerHTML=xmlhttp.responseText;
}