// JavaScript Document
var win=null;
function mostrarimagen(url_imagen,titulo){
var img = new Image();
img.src = url_imagen;
win=window.open('','','width='+img.width+',height='+img.height+',scrollbars=no,resizable=1,toolbar=0');
win.document.write ('\n');
win.document.write (' \n');
win.document.write (' '+titulo+'\n');
win.document.write (' \n');
win.document.write (' \n');
win.document.write (' 
\n');
win.document.write (' \n');
win.document.write ('\n');
}