var viewportwidth;
    var viewportheight;
     
    // the more standards compliant browsers (mozilla/netscape/opera/IE7) use window.innerWidth and window.innerHeight
    if (typeof window.innerWidth != 'undefined')
    {
         viewportwidth = window.innerWidth,
         viewportheight = window.innerHeight
    }
     
    // IE6 in standards compliant mode (i.e. with a valid doctype as the first line in the document)
    else if (typeof document.documentElement != 'undefined'
        && typeof document.documentElement.clientWidth !=
        'undefined' && document.documentElement.clientWidth != 0)
    {
          viewportwidth = document.documentElement.clientWidth,
          viewportheight = document.documentElement.clientHeight
    }
     
    // older versions of IE 
    else
    {
          viewportwidth = document.getElementsByTagName('body')[0].clientWidth,
          viewportheight = document.getElementsByTagName('body')[0].clientHeight
    }
	
    topPosition = (viewportheight / 2) - 320;
    leftPosition = (viewportwidth / 2) - 640;	
    
    if (viewportwidth>1024) {
         params  = 'width= 1280';
         params += ', height=718';
         params += ', top=';
         params += topPosition;
         params += ', left=';	
         params += leftPosition;
         params += ', scrollbars=1';			 	
    } else {
         params  = 'width='+screen.width;
         params += ', height='+screen.height-10;
         params += ', top=0, left=0, scrollbars=1'; 
         //params += ', fullscreen=yes';	
        //alert('width = 1024'); 
    }
    
    function popUp(url) {
        newwindow=window.open(url,'name', params);
        if (window.focus) {newwindow.focus()}
        return false;
    }