function Load_Utilidades(){
 document.getElementById('AccionVolverSup').href='javascript:volver()';
 document.getElementById('AccionVolverInf').href='javascript:volver()';
}

function volver() {
 history.back(-1);
}

function Ampliar_Imagen(Foto,ancho,alto) {
	day = new Date();
	id = day.getTime();
	eval("page" + id + " = window.open(Foto, '" + id + "', 'toolbar=0,scrollbars=0,location=0,statusbar=0,menubar=0,resizable=0,width='+ancho+',height='+alto+',left = 1,top = 1');");
}