function moveShadow(xPos){
	document.getElementById("navShadow").style.display = "block";
	document.getElementById("navShadow").style.marginLeft = xPos + "px";
}

function hideShadow(){
	if(origX == "none"){
		document.getElementById("navShadow").style.display = "none";
	}else{
		document.getElementById("navShadow").style.display = "block";
		document.getElementById("navShadow").style.marginLeft = origX + "px";
	}
	
}