jQuery(document).ready(function(){
   
   jQuery('#lava').fadeTo(0, 0.4);
	
   jQuery.fn.fadeToggle = function(speed, toggle, easing, callback) {
        return this.animate({opacity: toggle}, speed, easing, callback);  
      };
	
   jQuery('#lava').mouseover(function () {
      jQuery(this).fadeToggle('slow', 1);
    });
    jQuery('#lava').mouseout(function () {
       jQuery(this).fadeToggle('slow', 0.4);
    });
});