$(document).ready(function(){
	ambbreLi();
});
function ambbreLi(){
	$('#main #center ul li').unbind();
	$('#main #center ul li').bind('mouseover', function(){
		$(this).css("opacity","1");
		$(this).css("filter","alpha(opacity=100)");
	}).bind('mouseout', function(){
		$(this).css("opacity","0.6");
		$(this).css("filter","alpha(opacity=60)");
	});
}