code: function scrapImage(window){
     var $ = window.$;
     var url = window.url;
  
     var thumbs = [];
     var thumbsRejected = [];
     var title = scrapTitle(window);
     var addToThumbs = function(image,beginning){
        var src = $(image).attr('src');
        if(src && isValidExtension(src) ){
           src = utils.toURL(src,url);
           if(beginning){
              thumbs.unshift(src);
           }else{
              thumbs.push(src);
           }
        }else if(src){
           thumbsRejected.push(src);
        }
     };
     // Open Graph protocol by Facebook: <meta property="og:image" content="(*)"/>
     $('meta[property="og:image"]').each(function(){
        var content = $(this).attr('content');
        if(content) thumbs.push(utils.toURL(content));
     });
  
     // Schema.org: <img itemprop="image" src="(*)"/>
     $('img[itemprop="image"]').each(function(){
        addToThumbs(this);
     });
  
     // Oriented product informations
     if(thumbs.length < 1){
        $('img[id*="product"]').each(function(){
            addToThumbs(this);
        });
  
        $('img[class*="product"]').each(function(){
            addToThumbs(this);
        });
     }
  
     // Grab all images
     if(thumbs.length < 10){
        $('img').each(function(){
           if($(this).attr('itemprop') === 'image') return;
           var alt = $(this).attr('alt');
           // Leave this test alone
           // the selector 'img[alt="title"]' will not work if the title is like LG 42PT35342" PLASMA TV. Escaping issues.
           // Image where the title of the page is equal to the content of the alt attribute of the image tag.
           if(alt === title){
              addToThumbs(this,true);
           }else{
              addToThumbs(this);
           }
        });
     }
  
     if(thumbs.length === 0){
        thumbs = thumbsRejected;
     }
  
     return thumbs;
  }
docs: Retrieve image urls on the page
  
  @param  {Object} window -
  @return {Array}
  @api public