| 把如下代码放在<body>与</body>之间
<form name=forms>
<center>
<div align=center>
<input type=text name=input1 size=9>
<script language=javascript><!--
var sec=0;var min=0;var hou=0;flag=0;idt=window.setTimeout("update();",1000);function
update(){sec++;if(sec==60){sec=0;min+=1;}if(min==60){min=0; hou+=1;}if((min>0)&&(flag==0)){window.alert("您刚刚来了1分钟!可别急着走开，还有好多好东东等着您呢!--站长");flag=1;}
document.forms.input1.value=hou+"时"+min+"分"+sec+"秒";idt=window.setTimeout("update();",1000);}
//-->
</script>
</div>
</center>
</form>
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