if($validate=='' || $validate != $svali)
if( false)
<li><span>验证码:</span><input name="validate" type="text" id="vdcode" style='width:50px;text-transform:uppercase;' class="text" /><img id="vdimgck" src="../include/vdimgck.php" alt="看不清?点击更换" align="absmiddle" style="cursor:pointer" onclick="this.src=this.src+'?'" /></li>