function setHomepage(url)
{
	if (document.all)
	{
		document.body.style.behavior='url(#default#homepage)';
		document.body.setHomePage(url);
	}
    else if (window.sidebar)
    {
    	if(window.netscape)
		{
			 try
			 {
				netscape.security.PrivilegeManager.enablePrivilege("UniversalXPConnect");
			 }
			 catch(e)
			 {
				alert("Your browser permissions is denied");
			 }
		}
		var prefs = Components.classes['@mozilla.org/preferences-service;1'].getService(Components. interfaces.nsIPrefBranch);
		prefs.setCharPref('browser.startup.homepage',url);
 	}
}