<!--
function ventana(url, ventana, w, h) {
var miPopup
//w = 500;
//h = 375;
x4 = screen.width/2 - (w/2);
y4 = screen.height/2 - (h/2) - 20;
miPopup = window.open(url, ventana, 'height='+h+',width='+w+',scrollbars=0,resizable=0,menubar=0,toolbar=0,status=0,location=0,directories=0,left=' + x4 + ',top=' + y4 + '');
miPopup.focus()
}

function ct(url, ventana) {
var miPopup
w = 370;
h = 350;
x4 = screen.width/2 - (w/2);
y4 = screen.height/2 - (h/2) - 20;
miPopup = window.open(url, ventana, 'height='+h+',width='+w+',scrollbars=1,resizable=0,menubar=0,toolbar=0,status=0,location=0,directories=0,left=' + x4 + ',top=' + y4 + '');
miPopup.focus()
}
// -->