function checkkey()
{
if (document.SearchForm.keyword.value=="")
{
alert("请输入要搜索的关键词！");
document.SearchForm.keyword.focus();
return false;
}
else
{
document.check.keyword.value=document.SearchForm.keyword.value;
document.check.field.value=document.SearchForm.field.value;
var popupWin = window.open('3cccArticle_search.asp', 'CheckReg', '');
document.check.submit();
}
}