// JavaScript Document
function precarga(){
	/*for(var i=0; i<document.images.length;i++){
	   alert(document.images[i].src);
	}
	menos = new Image();
	menos.src = '../imgs/menos.gif';*/
}
function menuj(id,nitems){
 if (nitems!=0){
  var id = id;
  var nitems = nitems;
  var idImagen = String("img_"+id);
  //var cadSrc = String(document.images[idImagen].src);
  capa = document.getElementById(id).style;
  altInicial = 20;
  altItems = 19*nitems;
  altActual = parseInt(capa.height);
  altFinal = altItems+altInicial;
  inc=(altFinal/nitems)/1;
  	if (altActual <= altInicial) {
  
	/*  if(cadSrc.match("_off.") != null){
		  var cadSrcFin = cadSrc.replace("_off","_on");
		  document.images[idImagen].src = cadSrcFin;
		 
	  }*/
	  abreMenu();
		
    }else {
		/*if(cadSrc.match("_on.") != null){
			var cadSrcFin = cadSrc.replace("_on","_off");
			document.images[idImagen].src = cadSrcFin;
			
		}*/
  	  	cierraMenu();
  	}
 }   
}

function abreMenu(){
  altActual += inc;
  if (altActual < altFinal) {
	  capa.height = altActual+'px';
  	  setTimeout ("abreMenu ();",1);
  } else {
		capa.height = altFinal+"px";
		
	}
}
function cierraMenu(){
	altActual -= inc;
	if (altActual >= altInicial) {
		capa.height = altActual+'px';
		setTimeout ("cierraMenu ();",1);
	} else {
		capa.height = "10px";
	}
}
function popUp(url,ancho,alto,scrollbar){
	x = (screen.availWidth/2)-(ancho/2);
	y = (screen.availHeight/2)-(alto/2);
	parametros = "width="+ancho+", height="+alto+", scrollbars="+scrollbar+", resizable=no, top="+y+", left="+x+"";
	ventana = window.open(url,'ventana',parametros);
	ventana.focus();
}