function popup(URL, P_WIDTH, P_HEIGHT, TEXTO) {
var preview=null;
window.focus();
W_WIDTH = P_WIDTH + 50;
W_HEIGHT = P_HEIGHT + 120;
if (screen.width > W_WIDTH)
X_POS = (screen.width-W_WIDTH)/2;
else {
X_POS = 0;
W_WIDTH = screen.width;
}
if (screen.height > W_HEIGHT)
Y_POS = (screen.height-W_HEIGHT)/2;
else {
Y_POS = 0;
W_HEIGHT = screen.height;
}
windowprops = "left=" + X_POS + ",top=" + Y_POS + ",width=" + W_WIDTH + ",height=" + W_HEIGHT + ",resizable=yes,scrollbars=yes";
text = "" + "Foto Ampliada" + "";
text += "";
text += "![se muestra una foto](" + URL + ")
";
text += "" + TEXTO;
text += "
";
preview = window.open("", "preview", windowprops);
if (preview.window.focus){preview.window.focus();}
preview.resizeTo(W_WIDTH,W_HEIGHT);
preview.moveTo(X_POS,Y_POS);
preview.document.open();
preview.document.write(text);
preview.document.close();
}