<select>标签解决只读状态下无法传递值到后台问题

  function SetReadOnly(id){     var obj=document.getElementById(id)     if(obj){             obj.onbeforeactivate = function(){return false;};             obj.onfocus = function(){obj.blur();};             obj.onmouseover = function(){obj.setCapture();};             obj.onmouseout = function(){obj.releaseCapture();};         }    }   function UnSetReadOnly(id){     var obj=document.getElementById(id)     if(obj){             obj.onbeforeactivate = function(){return true;};             obj.onfocus = function(){};             obj.onmouseover = function(){};             obj.onmouseout = function(){};         }    }