Simple extend jquery plugin for load images into DOM

preloadImages.js

var cache = [];

// Arguments are image absolute paths to the current page
$.preLoadImages = function(arrImg,funcCallback) {
   var imgLen = arrImg.length;
   for (var i = imgLen; i>=0 ;i--) {
      if(typeof arrImg[i] !== 'undefined'){
         var cacheImage = document.createElement('img');
	 cacheImage.src = arrImg[i];
	 cache.push(cacheImage);
      }
   }

   // calling the callback
   if(typeof funcCallback == 'function'){
      return funcCallback.call(this);
   }
}

//Relly simple exemple
var arrImage = ["http://urlimg1","http://urlimg1","http://urlimg..N"];
jQuery.preLoadImages(arrImage, function(){
   console.log('Function Callback');
});