<!--
function elementExist(id) {
if (document.getElementById) {
	return(document.getElementById(id));
	} else if(document.all) {
	return(document.all.item(id));
	}
return false;
}
function closeOverlays(olid,btnid) {
var ols = new Array("about_video");
var btns = new Array("btnAboutVideo");
for(var x=0;x<ols.length;x++) {
	if(olid!=ols[x]&&(oObj=elementExist(ols[x]))) {
		oObj.style.visibility = "hidden";
		}
	if(btns[x]!=btnid&&(btnObj=elementExist(btns[x]))) {
		btnObj.className = "nav_btn";
		}
	}
}
function viewVideo() {
var id="about_video";
var btn="btnAboutVideo";
closeOverlays(id,btn);
var pgContent = elementExist("pg_content");
if(fObj = elementExist(id)) {
	if(fObj.style.visibility=="visible") {
		fObj.style.visibility = "hidden";
		pgContent.style.visibility = "visible";
		} else {
		fObj.style.visibility = "visible";
		pgContent.style.visibility = "hidden";
		}
	if(btnObj = elementExist(btn)) {
		if(btnObj.className=="nav_btn") {
			btnObj.className = "nav_btn_selected";
			} else {
			btnObj.className = "nav_btn";
			}
		}
	}
}
//-->