var imagenes = new Array();

function preload(rutas)
{
	for (i = 0; i < rutas.length; i++)
	{
		imagenes[i] = new Image;
		imagenes[i].src = rutas[i];
	}
	
	
}

function swap(imagen, index)
{
	var aux = imagenes[index].src;
	imagenes[index].src = imagen.src;
	imagen.src = aux;
}


function openWin(url,width,height,scrole) {
    var left = (screen.availWidth - width) / 2;
    var top = (screen.availHeight - height) / 2;
    var name= "Uploads"; 
    
    var features = 
    	      "fullscreen=" + 0 +
                 ",toolbar=" + 0 +
                 ",location=" + 0 +
                 ",status=" + 0 +
                 ",menubar=" + 0 +
                 ",scrollbars=" + scrole +
                 ",resizable=" + 0 +
                 ",width=" + width +
                 ",height=" + height +
                 ",left=" + left +
                 ",top=" + top;
                  window.open(url,name,features);	
}