function popdisclaimer(file) 
{
if (navigator.appName == "Netscape")
{
if (navigator.appVersion.charAt(0) < 4) 
{

window.open(file,'propop','screenX='+ x1 + ',screenY=' + y1 + ',width=750,height=525,resizable=yes,toolbar=no,location=no,directories=no,status=no,menubar=no,scrollbars=no');
} 
else
{
var x1 = this.screenX + (this.outerWidth  - 750)/2;
var y1 = this.screenY + (this.outerHeight - 600)/2;

window.open('disclaimer.htm','propop','screenX='+ x1 + ',screenY=' + y1 + ',width=750,height=525,resizable=no,toolbar=no,location=no,directories=no,status=no,menubar=no,scrollbars=no');
}
}
if (navigator.appName == "Microsoft Internet Explorer")					
{
if (file == "certificate.htm") 
{
var x1 =  (screen.width  - 550)/2;
var y1 =  (screen.height - 600)/2;

window.open(file,'propop2','screenX='+ x1 + ',screenY=' + y1 + ',left='+ x1 + ',top='+ y1 + ',width=560,height=525,resizable=yes,toolbar=no,location=no,directories=no,status=no,menubar=no,scrollbars=yes');
}
else
{
var x1 =  (screen.width  - 450)/2;
var y1 =  (screen.height - 300)/2;

window.open(file,'propop','screenX='+ x1 + ',screenY=' + y1 + ',left='+ x1 + ',top='+ y1 + ',width=625,height=300,resizable=no,toolbar=no,location=no,directories=no,status=no,menubar=no,scrollbars=yes');


}
}	
}