$(document).ready(function(){
var tabT = $('#tab_title').children('ul').children('li');
var tabC = $('#tab_con').children('.tab-mod');
$.each(tabT,function(i){
$(this).click(function(){
$.each(tabC, function () {
$(this).css("z-index","1")
});
tabC.eq(i).css("z-index","20");
});
});
});
