function popwin(url,winwidth,winheight)
{
	newwin = window.open(url, 'custom', 'leftmargin=0,toolbar=0,location=0,directories=0,status=0,menubar=0,scrollbars=2,resizable=0,width='+winwidth+',height='+winheight);
	newwin.resizeTo(winwidth,winheight);
	newwin.blur();
	newwin.focus();
}