输入ip.htm

j2me_stock_example

<style type=text/css>
.ip_input  { width:20px; height:16px; font:normal 12px 宋体; color:#000000; border:0px; text-align:center; position:relative; top:1px; }
.all_input  { width:112; height:20px; font:normal 8px 宋体; color:#000000; border:1px solid #000000; text-align:center; }
</style>

<script language=javascript>
function keyDownEvent(obj)
{
  code=event.keyCode;
//	alert(code);
  if(!((code>=48&&code<=57)||(code>=96&&code<=105)||code==190||code==110||code==13||code==9||code==39||code==8||code==46||code==99||  code==37 || code==191))
    event.returnValue=false;
  if(code==13)
    event.keyCode=9;
  if(code==110||code==190)
    if(obj.value)
      event.keyCode=9;
	else
	  event.returnValue=false;
}
function keyUpEvent(obj1,obj2)
{
  code=event.keyCode
  if(obj1.value.length>=3&&code!=37&&code!=39&&code!=16&&code!=9&&code!=13)
    obj2.focus();
}
</script>

  <div class=all_input>
    <input name=ip1 class=ip_input maxlength=3 onkeydown=keyDownEvent(this) onkeyup=keyUpEvent(ip1,ip2)>·<input
	name=ip2 class=ip_input maxlength=3 onkeydown=keyDownEvent(this) onkeyup=keyUpEvent(ip2,ip3)>·<input
	name=ip3 class=ip_input maxlength=3 onkeydown=keyDownEvent(this) onkeyup=keyUpEvent(ip3,ip4)>·<input
	name=ip4 class=ip_input maxlength=3 onkeydown=keyDownEvent(this)>
  </div>