function chkForm()
{
  if(form1.keyword.value=="") {
    alert("请输入关键字");
    form1.keyword.focus();
    return false;
  }
  if(form1.type.options[1].selected){
     form1.action="Articles.aspx?ChannelID=4";
     form1.submit();
  }else{
     form1.action="Products.aspx?ChannelID=3";
     form1.submit();
  }
}

function AddFavorite(sURL, sTitle)
{
 try{
	 window.external.addFavorite(sURL, sTitle);
 }catch(e){
	 try{
		 window.sidebar.addPanel(sTitle, sURL, "");
		 }catch(e){
			alert("此操作被浏览器拒绝！\n请使用Ctrl+D进行添加。");
		}
  }
}

function SetHome(obj,vrl){
  try{
    obj.style.behavior='url(#default#homepage)';obj.setHomePage(vrl);
  }
  catch(e){
    if(window.netscape) {
      try {
        netscape.security.PrivilegeManager.enablePrivilege("UniversalXPConnect");
      }
      catch (e) {
        alert("此操作被浏览器拒绝！\n请在浏览器地址栏输入“about:config”并回车\n然后将 [signed.applets.codebase_principal_support]的值设置为'true',双击即可。");
      }
      var prefs = Components.classes['@mozilla.org/preferences-service;1'].getService(Components.interfaces.nsIPrefBranch);
      prefs.setCharPref('browser.startup.homepage',vrl);
     }
  }
}