var jsetHOMEPage = new Object();
// 主页URL
jsetHOMEPage.url = "http://www.google.com";
// 设置IE主页
jsetHOMEPage.setIEHomePage = function(obj) {
	obj.style.behavior='url(#default#homepage)';
	obj.setHomePage(jsetHOMEPage.url);
	return false;
}
// 设置FF主页
jsetHOMEPage.setFFHomePage = function() {
    if(window.netscape) {
        try {
            netscape.security.PrivilegeManager.enablePrivilege("UniversalXPConnect");
        }
        catch(e) {
            alert("this action was aviod by your browser，if you want to enable，please enter about:config in your address line,and change the value of signed.applets.codebase_principal_support to true");
        }
     }
     var prefs = Components.classes['@mozilla.org/preferences-service;1'].getService(Components. interfaces.nsIPrefBranch);
     prefs.setCharPref('browser.startup.homepage',jsetHOMEPage.url);
}
// 设置主页调用的方法
jsetHOMEPage.action = function(obj) {
	if (document.all) {
		jsetHOMEPage.setIEHomePage(obj);
	}
	else {
		jsetHOMEPage.setFFHomePage();
	}
	return false;
}