var ns4,ns6,ie4,ie5,ie6,aol,opera;
var nUser=navigator.userAgent.toLowerCase();
var bname = navigator.appName.toLowerCase();
var ver = navigator.appVersion;
var int_ver = parseInt(ver);
if (nUser.indexOf('opera')!=-1){opera = true;}
if (nUser.indexOf('aol')!=-1){aol = true;}
if (bname.indexOf("netscape") >= 0 && int_ver == 4) ns4 = true;/*netscape 4 +*/
if (nUser.indexOf("gecko") != -1){ns6 = true;gecko=true;}/*netscape 6 and gecko*/
if (nUser.indexOf('msie 4') >0){ie4 = 1;}/*internet explorer 4*/
if (nUser.indexOf('msie 5') >0){ie5 = 1;}/*internet explorer 5*/
if (nUser.indexOf('msie 6') >0){ie6 = 1;}/*internet explorer 6*/

function vlaunch(file) {
	if (ie4||ie5||ie6||ns4||ns6||gecko||opera||aol) {
			var nWin = 'http://www.cbsnews.com/htdocs/videoplayer/video_template.html?'+file;
			var date = new Date();
			var time = date.getSeconds();
			var viewer = "viewer"+time;
			//alert(viewer);
			nWindow = window.open(nWin, 'cbsnews_video', 'width=350,height=450,scrollbars=no,resizable=no,location=no,status=no');
			nWindow.focus();
			} 
		 else 
		 	{	
				alert("We\'re sorry, the CBS video player requires a version 4 broswer\nClick ok to continue to our browser download page\n Hit cancel to return");
				window.open('http://www.microsoft.com/windows/ie/download/ie55sp1.htm?FinishURL=%2Fdownloads%2Frelease%2Easp%3FReleaseID%3D25479%26redirect%3Dno', '', '');
				}
		
}