var gCheckRandFlag = 0;//-1表示错误，1表示正确    
 var gSubmitFlag = true; //防止重复提交
  
  function check()  
  {
	//document.form2.onsubmit();
  	  if( document.form2.commentRand==null)
  	  	  showRand();
  	  
  	if (!gSubmitFlag){
  	  return false;
  	}
  //var content=document.form2.content.value;
  var content=editor.getHTML();
  var span_error=document.getElementById("error_list");
  span_error.innerHTML = "";
 if(content.Trim()=="")
 {
	  if(span_error.innerHTML!="") return false;
	  span_error.innerHTML =  '<div class="prompt"><img src="/images/mima.gif" width="14" height="14" align="absmiddle" /> 内容不能为空！</div>';//"*内容不能为空！";
	  document.form2.focus();
	  return false;
 }
 
 span_error.innerHTML = "";
 if ( document.form2.content.value.length > 1300)
 { 
	  if(span_error.innerHTML!="") return false;
	  span_error.innerHTML = '<div class="prompt"><img src="/images/mima.gif" width="14" height="14" align="absmiddle" /> 内容不能超过1300字！</div>';//"*内容不能超过1300字！";
	  document.form2.focus();
      return false;
 }

  span_error.innerHTML = "";
 if ( document.form2.commentRand.value.Trim() == "")
 { 
	  if(span_error.innerHTML!="") return false;
	  span_error.innerHTML = '<div class="prompt"><img src="/images/mima.gif" width="14" height="14" align="absmiddle" /> 验证码不能为空！</div>';//"*验证码不能为空！";
	  document.form2.commentRand.focus();
      return false;
 }
 
   span_error.innerHTML = "";
 if (document.form2.commentRand.value.Trim().length != 4)
 { 
	  if(span_error.innerHTML!="") return false;
	  span_error.innerHTML = '<div class="prompt"><img src="/images/mima.gif" width="14" height="14" align="absmiddle" /> 验证码不准确，请重新输入！</div>';
	  document.form2.commentRand.focus();
      return false;
 }
 checkRand();
 return false;
 }
function checkRand(){
	createXMLHttpRequest();
	if(document.form2.commentRand.value==null)
		showRand();
	var url = "/checkGroupCommentRand.do?rand="+document.form2.commentRand.value.Trim();
	xmlHttp.open("POST",url,true);
	xmlHttp.setRequestHeader("Content-Type","application/x-www-form-urlencoded;");
	xmlHttp.onreadystatechange = changeRandFlag;
	xmlHttp.send(null);	
}
//回调，验证码是否准确
function changeRandFlag(){
  if (xmlHttp.readyState == 4){
    if (xmlHttp.status == 200){
      var flag = xmlHttp.responseXML.getElementsByTagName("flag")[0].firstChild.data;
      if(flag=="true"){
        gCheckRandFlag = 1;
          document.form2.target="_self";
          document.form2.action="/creategroupdoccomment.do";
          document.form2.onsubmit();
          document.form2.submit();
          gSubmitFlag = false;
          return;
      }else {
      	gCheckRandFlag = -1;
      	  var span_error=document.getElementById("error_list");
	  	  span_error.innerHTML = "";
		  if(span_error.innerHTML!="") return false;
		  span_error.innerHTML = "*验证码不准确，请重新输入！";
		  document.form2.commentRand.focus();
		  //var span_commentrand=document.getElementById("comment_rand");
	      //span_commentrand.innerHTML ="";
	      //showRand();
		  gCheckRandFlag = 0;	  		
      }
    }else {
      	  gCheckRandFlag = -1;
      	  var span_error=document.getElementById("error_list");
	  	  span_error.innerHTML = "";
		  if(span_error.innerHTML!="") return false;
		  span_error.innerHTML = "*验证码不准确，请重新输入!";
		  document.form2.commentRand.focus();
		  //var span_commentrand=document.getElementById("comment_rand");
	      //span_commentrand.innerHTML ="";
	      //showRand();
		  gCheckRandFlag = 0;
      }
  }
}