noConflict

var $j = jQuery.noConflict();
 
$j(function(){
	//your jquery .ready magic here!
    $j("#sidebar li a").hover(function(){
    	$j(this).stop().animate({
    		paddingLeft: "20px&"
    	}, 400);
    }, function() {
    	$j(this).stop().animate({
    		paddingLeft: 0
    	}, 400);
    });
});
//the $j can be anything really
 
/* Alternately you can use */
 
jQuery.noConflict();
 
jQuery(document).ready(function($) {
    // $() will work as an alias for jQuery() inside of this function
});