rnd.today=new Date(); rnd.seed=rnd.today.getTime(); function rnd() { rnd.seed = (rnd.seed*9301+49297) % 233280; return rnd.seed/(233280.0); }; function rand(number) { return Math.ceil(rnd()*number); }; function check_reg() { if(document.form.keyword.value=="") { alert("请输入搜索关键字!"); return false; } } document.write(''); document.write('');