jQuery.fn.fadeIn = function(speed, callback) { 
	return this.animate({opacity: 'show'}, speed, function() { 
		if (jQuery.browser.msie)  
			this.style.removeAttribute('filter');  
		if (jQuery.isFunction(callback)) 
			callback();  
	}); 
}; 

jQuery.fn.fadeOut = function(speed, callback) { 
	return this.animate({opacity: 'hide'}, speed, function() { 
		if (jQuery.browser.msie)  
			this.style.removeAttribute('filter');  
		if (jQuery.isFunction(callback)) 
			callback();  
	}); 
}; 
 
jQuery.fn.fadeTo = function(speed,to,callback) { 
	return this.animate({opacity: to}, speed, function() { 
		if (to == 1 && jQuery.browser.msie)  
			this.style.removeAttribute('filter');  
		if (jQuery.isFunction(callback)) 
			callback();  
	}); 
};