//将该网站设为主页
function setHomePage(site_url)
{
	var the_pageurl=site_url;
	if(the_pageurl=="")
	{
		the_pageurl=window.location.href;
	}
	if (document.all){
		//document.body.style="BEHAVIOR: url(#default#homepage)"
		document.body.style.behavior='url(#default#homepage)';
		document.body.setHomePage(the_pageurl);
	}
	else if(window.sidebar) {
		if(window.netscape){
			try{
				netscape.security.PrivilegeManager.enablePrivilege("UniversalXPConnect");
			}catch (e){
				alert( "该操作被浏览器拒绝，如果想启用该功能，请在地址栏内输入 about:config，然后将项 signed.applets.codebase_principal_support 值该为true" );
			}
		}	
		var prefs = Components.classes['@mozilla.org/preferences-service;1'].getService(Components.interfaces.nsIPrefBranch);
		prefs.setCharPref('browser.startup.homepage',the_pageurl);
	}
}

//添加到收藏夹中
function addFavorite(site_url,site_name)
{
	var the_pagetitle=site_name;
	var the_pageurl=site_url;
	if(the_pageurl=="")
	{
		the_pageurl=window.location.href;
	}
	if(the_pagetitle=="")
	{	
		the_pagetitle=document.title;
	}
	//window.external.addFavorite(the_pageurl,the_pagetitle);
	if (window.sidebar) {
		window.sidebar.addPanel(the_pagetitle,the_pageurl,"");    
	} else if(document.all) {
		//alert(window.external);
		window.external.addFavorite(the_pageurl,the_pagetitle);
		//window.external.addFavorite('http://www.tzbaidu.net','我的网站名称');
	} else if(window.opera && window.print) {  
		return true;   
	}
}

//当网站的图片未能显示时的处理事件
function changeNoImage()
{
	var webImgs=document.getElementsByTagName("img");
	for(var i=0;i<webImgs.length;i++){
		webImgs[i].onerror=function(event){
			event = event || window.event;
			event.srcElement.src="/home/images/no_pic.jpg";
			//this.src="/images/no_pic.jpg";
		}
	}
}