function SwitchMenu(par, obj){
	if(document.getElementById){
	var el = document.getElementById(obj);
	var ar = document.getElementById("portfolio_nav_"+par).getElementsByTagName("DIV");
		if(el.style.display == "none"){
			for (var i=0; i<ar.length; i++){
				ar[i].style.display = "none";
			}
			el.style.display = "block";
		}else{
			el.style.display = "none";
		}
	}
}
function HideSwitchMenu(par){
	if(document.getElementById){
		var ar = document.getElementById("portfolio_nav_"+par).getElementsByTagName("DIV");
		for (var i=0; i<ar.length; i++){
			ar[i].style.display = "none";
		}
	}
}

document.onselectstart = new Function("return false");