sfHover = function() {
	var sfEls = document.getElementById("nav").getElementsByTagName("LI");
	for (var i=0; i<sfEls.length; i++) {
		sfEls[i].onmouseover=function() {
			this.className+=" sfhover";
		}
		sfEls[i].onmouseout=function() {
			this.className=this.className.replace(new RegExp(" sfhover\\b"), "");
		} 
	} 
	} 
	if (window.attachEvent) window.attachEvent("onload", sfHover);
	
function getExpand(item)
{
	obj = document.getElementById(item);
	key = document.getElementById(item);

	obj.style.display = "block";
	key.style.fontWeight = "normal";

}
function getHide(item)
{
	obj = document.getElementById(item);
	key = document.getElementById(item);

	obj.style.display = "none";
	key.style.fontWeight = "normal";

}
function getExpHide(item)
{
	obj = document.getElementById(item);
	visible = (obj.style.display != "none");
	key = document.getElementById(item);

	if (visible)
	{
		obj.style.display = "none";
 		key.style.fontWeight = "normal";
	}
	else
	{
		obj.style.display = "block";
		key.style.fontWeight = "normal";
	}
}
function clearDefault(el) {
  if (el.defaultValue==el.value) el.value = ""
}