function ventanaitem(imagen,ancho,alto) {
var barra = '/'
vventana=open('','nombre',"resizable=0, menubar=0, toolbar=0, location=0, personalbar=0, status=0, scrollbar=0, width="+ancho+", height="+alto);
vventana.moveTo((screen.availWidth-ancho)/2,(screen.availHeight-alto)/2);
vventana.document.writeln('::Hstoric::');
vventana.document.writeln('
'); vventana.document.writeln('<'+barra+'script><'+barra+'body><'+barra+'html>');
}