//_library/window_width.js
//1.00, MC, 25/2/08

function window_width(){
	if (typeof(window.innerWidth)=='number') {
  		//Non-IE
   		return window.innerWidth;
	} else if (document.documentElement && (document.documentElement.clientWidth || document.documentElement.clientHeight )) {
   		//IE 6+ in 'standards compliant mode'
   		return document.documentElement.clientWidth;
	} else if (document.body && (document.body.clientWidth || document.body.clientHeight )) {
   		//IE 4 compatible
   		return document.body.clientWidth;
	}
	alert("Cannot determine window width");
	return 0;
}