function MM_reloadPage(init) {  //reloads the window if Nav4 resized
  if (init==true) with (navigator) {if ((appName=="Netscape")&&(parseInt(appVersion)==4)) {
    document.MM_pgW=innerWidth; document.MM_pgH=innerHeight; onresize=MM_reloadPage; }}
  else if (innerWidth!=document.MM_pgW || innerHeight!=document.MM_pgH) location.reload();
}
MM_reloadPage(true);

function check()
{
   if(checkspace(document.searchform.searchkey.value !='请输入关键字'))  {
	document.searchform.searchkey.focus();
	alert("请输入查询关键字！");
	return false;
  }
  if(checkspace(document.searchform.searchkey.value))  {
	document.searchform.searchkey.focus();
	alert("请输入查询关键字！");
	return false;
  }
   document.searchform.submit();
}
function checkspace(checkstr) {
  var str = '';
  for(i = 0; i < checkstr.length; i++) {
    str = str + ' ';
  }
  return (str == checkstr);
}