$jqbkb = jQuery.noConflict();
jQuery(document).ready(function($jqbkb) {
	// main-nav behavior
	$jqbkb('#nav_top > ul > li')
	.mouseenter(function(){
		$jqbkb('.children', this).show();
	})
	.mouseleave(function(){
		$jqbkb('.children', this).hide();
	});

});