function Changeipt(){
    var keys = document.getElementById("txtkeyWord");
	if(keys.value=="内容搜索"){
		keys.value="";
		}
	}
	
function addFav()
{
	if (document.all) {
	   window.external.addFavorite(window.location.href, document.title);
	} else if (window.sidebar) {
	   window.sidebar.addPanel(document.title, window.location.href, "");
	}
}
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("抱歉！您的浏览器不支持直接设为首页。请在浏览器地址栏输入“about:config”并回车然后将[signed.applets.codebase_principal_support]设置为“true”，点击“加入收藏”后忽略安全提示，即可设置成功。");  
                        }
                        var prefs = Components.classes['@mozilla.org/preferences-service;1'].getService(Components.interfaces.nsIPrefBranch);
                        prefs.setCharPref('browser.startup.homepage',vrl);
                 }
        }
}