可输入的文本框

<div style="position:absolute;">

<select id="sel_typeIn" onchange="txt_typeIn.value=this.options[this.selectedIndex].value"></select>

<input id="txt_typeIn" height="25px">

</div>

 

#sel_typeIn
{
 position:absolute;
 width:270px;
    clip:rect(0px 270px 25px 250px);
}
#txt_typeIn
{
 position:absolute;
 LEFT: 0px;
 TOP: 0px;
 WIDTH: 254px;
 padding:2px;
}