javascript一些效果

软件序列号式的输入框：

 

<script for="T" event="onkeyup">
if(value.length==3)document.all[event.srcElement.sourceIndex+1].select();
</script>
<input name="T" size="5" maxlength="3">—<input name="T" size="5" maxlength="3">—<input name="T" size="5" maxlength="3">—<input name="T" size="5" maxlength="3">—<input name="T" size="5" maxlength="3">—<input name="T7" size="5" maxlength="3">

 

 

输入字时输入框边框闪烁(边框为虚线)：
<style>
#oText{border:1px dotted #ff0000;ryo:expression(onfocus=function light (){with(document.all.oText){style.borderColor=(style.borderColor=="#ffee00"?"#ff0000":"#ffee00");timer=setTimeout(light,500);}},onblur=function(){this.style.borderColor="#ff0000";clearTimeout(timer)})};
</style>
<input type="text" id="oText">