<img src="http://www.iecn.net/forum/images/iecn/newthread.gif" title="MyLogo" onclick="iecn.disabled=false;" />
点击img后再试试！
<input id="iecn" style="border:1 solid #000000;color: #0000ff;width: 155px"   TYPE="TEXT" size="18" value="http://" onfocus="if (value =='http://'){value =''}" onblur="if (value ==''){value='http://'}"name="trans" disabled/>