window.addEvent('domready', function()
{
var kwick_images = $$('.kwick_img');
var header_img = $$('.headimg');
var header_src = header_img[0].getProperty('src');
var img_src = header_src.substring(0, header_src.lastIndexOf('.'));
var kwick_links = $$('.static_kwick_item a');

var i = 0;
kwick_images.each(function(img) {
  var src = img.getProperty('src');
  var ext = src.substring(src.lastIndexOf('.'), src.length);
  var bw = src.replace(ext, '_bw' + ext);
  //preload the image
  document.createElement('img').setAttribute('src', bw);
    
  if (src.indexOf(img_src) == -1)
  {	
    img.setProperty('src', bw); 	
    kwick_links[i].addEvent('mouseenter', function(){ 
      img.setProperty('src', src); 
    });
    kwick_links[i].addEvent('mouseleave', function(){ 
      img.setProperty('src', bw); 
    }); 
  }
  ++i;
});


});