function setButtonHover (){

    var preload = new Array(); 
    var i       = 0;
    jQuery(".button img").each(function(){
        
        preload[i] = new Image();
        preload[i].src = jQuery(this).attr("src").replace("images/b/", "images/b/over/over_");
        //alert(preload[i].src);
        i++;
    });
    
    jQuery('.button').bind('mouseover mouseout', function(event) {
    	var image 		= jQuery(this).children().children().children();
    	var image_src 	= image.attr("src");
    	
		if (event.type == 'mouseover') 
		{    	    	
			if(image_src.indexOf("images/b/over/over_") > 0)
			{               
			    image.attr("src", image_src.replace("images/b/over/over_", "images/b/"));
			} else {            
			    image.attr("src", image_src.replace("images/b/", "images/b/over/over_"));
			}	  
		} else {    	    	
			if(image_src.indexOf("images/b/over/over_") > 0)
			{               
			    image.attr("src", image_src.replace("images/b/over/over_", "images/b/"));
			} else {            
			    image.attr("src", image_src.replace("images/b/", "images/b/over/over_"));
			}
		}
    });

    
}