//*****************************************************
function valid_register(){

if(  document.regist.word.value.length==""  )
    {window.alert("对不起，请输入梦的关键字！");
       document.regist.word.focus();
       return false;
      } ;
if(  document.regist.word.value.length>20  )
    {window.alert("对不起，请将描述控制在20个字以内！");
       document.regist.word.focus();
       return false;
      } ;
win = window.open('','dream','scrollbars=yes,top=0,left=0,width=580,height=510');
theForm.submit();
return ;
  }