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

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 showPortfolioImage(s)
{
	document.getElementById("portfolioImage").style.background = "url("+s+") no-repeat center center";
}

var prevmainitem = "";

function selectParent(s) 
{
	document.getElementById(s).style.background = 'url(gfx/menu_item_active.jpg) repeat-x top left';
	prevmainitem = s;
}

function deselectParent(s)
{
	if(prevmainitem > "")
	{
		document.getElementById(s).style.background = 'url(gfx/menu_item_inactive.jpg) repeat-x top left';
	}
}		

function showImage(s)
{
	document.getElementById("viewimage").innerHTML = "<img src='"+s+"' style='width:760px;' />";
}