function showTooltip(fromIframe){
	var _tol = fromIframe ? window.parent.document.getElementById("tooltip") : document.getElementById("tooltip");
	if(_tol){
		var _w = _tol.offsetWidth;
		var _h = _tol.offsetHeight;
		var posX = fromIframe ? (window.parent.innerWidth!=undefined?(window.parent.innerWidth/2)-(_w/2):(window.parent.document.documentElement.clientWidth/2)-(_w/2)) : window.innerWidth!=undefined?(window.innerWidth/2)-(_w/2):(document.documentElement.clientWidth/2)-(_w/2);
		var _tolStyle = "left:"+posX+"px;";
		_tol.style.left=posX;
		_tol.setAttribute("style",_tolStyle);
		_tol.className="show_tooltip";
	}
}
function hideTooltip(){
	var _tol = document.getElementById("tooltip");
	_tol.innerHTML="";
	_tol.className="hide_tooltip"; 
	//alert(""+_tol);
}