// reveal resource category links

function expand(section) {
		var category = document.getElementById(section);
		var header = category.getElementsByTagName("h3").item(0);
		var menu = category.getElementsByTagName("ul").item(0);
		var headLink = header.getElementsByTagName("a").item(0);
		var trig = menu.style.display;
		if (trig=="block") { 
			trig="none";
			pos = "0px 0px";
			newTitle ="Expand category";
		}
		else if (trig=="" || trig=="none") 
		{
			trig="block";
			pos = "0px -49px";
			newTitle = "Collapse category";
		}
		
		menu.style.display = trig;
		header.style.backgroundPosition = pos;
		headLink.setAttribute('title', newTitle);
}

//clear search input

function clearText(thefield){
if (thefield.defaultValue==thefield.value)
	thefield.value = "";
}