function openNewWindow(URLtoOpen, windowName, windowFeatures) {
newWindow=window.open(URLtoOpen, windowName, windowFeatures); }

function show() {
	
	var newWin;
	
	var _width=495;
	var _height=416;
	
	var _top=screen.availHeight; 
	var _left=screen.availWidth;
	
	_top=( _top / 2 ) - ( _height / 2 );
	_left=( _left / 2 ) - ( _width / 2 );
	
	
	
newWin=window.open("banner.html", "_Spec", "width="+_width+", height="+_height+", top="+Math.round(_top)+", left="+Math.round(_left)+" , scrollbars=no, menubar=no, location=no, resizable=no, status=no");

newWin.focus();
	
}