function AbrirVentana(sSrc){
    nWidth	= 680;
    nHeight	= 650;
	
    nLeft = (screen.availWidth-nWidth)/2;
    nTop  = (screen.availHeight-nHeight)/2;
    window.open(sSrc,null,'height='+nHeight+',width='+nWidth+',status=yes,toolbar=no,menubar=no,top='+nTop+',left='+nLeft+',location=no,resizable=yes,scrollbars=1,screenX=100,screenY=0');
}