asp 复选框和文本框联动的问题??? 高手帮忙!
想达到的效果   :  
选中复选框的时候,文本框为只读.并显示指定值.  
当取消复选框时,文本框恢复可写,并清空文本框中内容..  

我这段代码的问题,如果选中复选框文本框可以显示指定值同时也变为只读(readOnly).   可不刷新页面取消复选框之后,文本框还是保持不可编辑(readOnly)内容也不会清除..   该怎么写呢?   各位高手帮忙了  


<Input   Type= "checkbox "   name= "ToolCollocate "   ID= "Checkbox1 "   onclick= "if(this.checked){ControlIDID.readOnly=true;}{document.all.ControlID.value= '640c07ba-098b-4cfa-b89a-09498c6ffa9b ';}else "   value= "1 ">  

协议ID   <input   id= "ControlIDID "   type= "text "   size= "20 "   value= " "   name= "ControlID "   style= "WIDTH:260px "   onchange1= "onclick ">

------解决方案--------------------
<Input Type= "checkbox " name= "ToolCollocate " ID= "Checkbox1 " onclick= "if(this.checked){ControlID.readOnly=true;document.all.ControlID.value= '640c07ba-098b-4cfa-b89a-09498c6ffa9b ';}else{ControlID.readOnly=false;document.all.ControlID.value= ' ';} " value= "1 ">

协议ID <input type= "text " size= "20 " value= " " name= "ControlID " style= "WIDTH:260px " onchange1= "onclick ">