function launch(file,name,winwidth,winheight)      
{ 
var string= "width="+winwidth+",height="+winheight+"toolbar=no,directories=no,menubar=no,resizable=no,dependent=yes"  
hwnd = window.open(file,name,string) ;                  
	if (navigator.appName == "Netscape") { 
		hwnd.focus() 
	} 
}