//add iframe shim 
function addshim(el, sid)
{
	var jel = $(el);
	
	if (map.GetMapMode() == VEMapMode.Mode3D)
	{
		var s = document.createElement("iframe");
		s.id = sid;
		s.frameBorder = "0";
		s.style.position = "absolute";
		s.style.zIndex = "0";
		s.style.top = jel.css("top");
		s.style.left = jel.css("left"); 
		s.style.filter = "Chroma(color=#ffffff)";
		s.width =jel.width()+"px";
		s.height = jel.height() + "px";
		s.style.display = "none";
		s.allowtransparency = "true";
		s.scrolling = "no";
		s.className = "Shim";
		
		el.shimElement = s;
		
		el.parentNode.insertBefore(s, el);
	}
}

function removeshim(sid)
{
	var msh = document.getElementById(sid);
	if (msh != null)
		msh.parentNode.removeChild(msh);

	msh = null;
}