function wordsub()
{
	if(formword.UserName.value=="")
	{
		alert("请填写你的姓名！");
		formword.UserName.focus();
		return false;
	}
	if(formword.UserName.value.length>8)
	{
		alert("您填写的姓名称过长，不能超过8个字！");
		formword.UserName.focus();
		return false;
	}
	
	if(document.formword.UserMail.value.length!=0)
  {
    if (document.formword.UserMail.value.charAt(0)=="." ||        
         document.formword.UserMail.value.charAt(0)=="@"||       
         document.formword.UserMail.value.indexOf('@', 0) == -1 || 
         document.formword.UserMail.value.indexOf('.', 0) == -1 || 
         document.formword.UserMail.value.lastIndexOf("@")==document.formword.UserMail.value.length-1 || 
         document.formword.UserMail.value.lastIndexOf(".")==document.formword.UserMail.value.length-1)
     {
      alert("Email地址格式不正确！");
      document.formword.UserMail.focus();
      return false;
      }
   }
 else
  {
   alert("请填写Email地址！");
   document.formword.UserMail.focus();
   return false;
   }



if(formword.UserComments.value=="")
	{
		alert("请填写您的留言内容！");
		formword.UserComments.focus();
		return false;
	}	
		if(formword.UserComments.value.length>250)
	{
		alert("留言内容最多只能写250个字！");
		formword.UserComments.focus();
		return false;
	}
}
		
 // JavaScript Document