winWidth =400;
winheight = 400; 
if (screen){ /* weeds out older browsers who do not understand screen.width/screen.height */
winWidth = screen.availWidth;
winHeight = screen.availHeight-180;
if(navigator.appName.substring(0,1)=="N"){
   //This is Netscape
   winHeight = screen.availHeight-90
}
if(navigator.appName.substring(0,1)=="I"){
   //This is Internet Explorer
   winHeight = screen.availHeight-180
}
}
function popupWindow(win){
   newWindow = window.open(win,'newWin',
'toolbar,location,scrollbars,resizable,status,menubar,width='+winWidth+',height='+winHeight+',left=0,top=0');
   newWindow.focus();
//window.close();	
}