<br> <br><script> <BR>function asd(){ <BR>var reg=document.getElementsByName("reg"); <BR>if(reg[0].checked){ <BR>document.getElementById("submit").disabled=false; <BR>} <BR>else { <BR>document.getElementById("submit").disabled=true; <br><br>} <BR>} <BR></script> <br><br> <br> <br><input name="reg" type="checkbox" onclick="asd();">阅读了吗? <br><input type="submit" value="注册" id="submit" disabled> <br> <br>