var ruta ="../images";
var i; 
var imagenes = new Array("images/menu01a.gif","images/menu01b.gif","images/menu02a.gif","images/menu02b.gif","images/menu03a.gif","images/menu03b.gif","images/menu04a.gif","images/menu04b.gif","images/menu05a.gif","images/menu05b.gif","images/menu06a.gif","images/menu06b.gif"); 
var lista_imagenes = new Array(); 
function cargarimagenes(){

   for(i in imagenes){ 
     lista_imagenes[i] = new Image(); 
     lista_imagenes[i].src = imagenes[i]; 

	} 
}

function nuevaventana(thePage,name,wt,ht,sc,res){ 
	leftPos= (screen.width-wt)/6 
	topPos = (screen.height-ht)/6 
	eval("win_"+name+" = window.open(thePage,name,'toolbars=yes, resizable='+res+',scrollbars="+sc+",left="+leftPos+",top="+topPos+",width="+wt+",height="+ht+"')");
}