function doClick(el) {
    
    var images = el.parentNode.parentNode.getElementsByTagName("img");
     for (var i=0, img; img=images[i++];) {
	   img.className =  img.className.replace(/ active/g,'')
     }
     

     var divs = document.getElementsByTagName("div");
     for (var i = 0, div; div = divs[i++]; ) {
         if (/bigbox/i.test(div.className)) {
             div.className = div.className.replace(/ active/g, '')

             if (div.className == 'bigbox ' + el.firstChild.className) {
                 div.className += " active";
                 el.firstChild.className += " active";
             }
         }
     }
	window.focus();
    return false;
}