jQuery(function ($) { 

// HOME SWAP
$('img').hover(function() {
      $this = $(this);
      $this.attr('src', $this.attr('src').replace("-off", "-on"));
}, function() {
      $this = $(this);
      $this.attr('src', $this.attr('src').replace("-on", "-off"));
});

	

// PRELOAD IMAGE
$.fn.preload = function() { 
    	this.each(function(){ 
        	$('<img/>')[0].src = this; 
		});
} 
	
    
});