function openpopup(urlin,namein,widthin,heightin,settingsin){
	if (settingsin == 'fixed'){settingsin = 'toolbar=no,location=no,menubar=no,status=no,directories=no,resizable=no,scrollbars=no';}
	if (settingsin == 'main' || settingsin == ''){settingsin = 'status=yes,resizable=yes,scrollbars=yes';}
	screenX = (screen.availWidth/2) - (widthin/2);
	screenY = (screen.availHeight/2) - (heightin/2);
	window.open(urlin,namein,settingsin +',height='+ heightin +',width='+ widthin +','+spacingheight+'='+screenY+','+spacingwidth+'='+screenX+'');
}