function popupcentro(url,alto,ancho){ 

	topV=(screen.availHeight/2) - alto/2;
	 leftV=(screen.availWidth/2) - ancho/2;
	 win="fullscreen=0,directories=0,resizable=0,location=0,status=0,scrollbars=0,toolbar=0,menubar=0,width="+ancho+",height="+alto+",screenX="+leftV+",screenY="+topV+",top="+topV+",left="+leftV
	 form=window.open(url,'form',win);
	 window.form.focus();
	 
}
function PopupPic(sPicURL) { 

				window.open("popup.htm?"+sPicURL, "", "resizable=0,HEIGHT=200,WIDTH=200");
				
}