function launch(url,w,h)
{
mywindow = null;
if(window.screen)
{
avw = screen.availWidth-40;
avh = screen.availHeight;
}
else
{
avw=640;
avh=480;
}

neww=w<avw?w:avw;
newh=h<avh?h:avh

settings="width="+neww+",height="+newh+",left="
+(avw-neww)/2+",top="
+(avh-newh-40)/2 
+",toolbar=no,location=no,directories=no,"
+"status=no,menubar=no,"
+"scrollbars=yes,resizable=no";
mywindow=window.open(url,'Toolbox',settings);
}