function show(id){
	if(id =="D"){
		/*选项卡内容变换*/
		document.getElementById("DC").style.display ="block";
		document.getElementById("PC").style.display ="none";
		document.getElementById("NC").style.display ="none";
		document.getElementById("JC").style.display ="none";
		document.getElementById("CC").style.display ="none";
		/*选项卡的背景颜色*/
		document.getElementById("D").style.background = "url(images/default_10.jpg) left top  no-repeat";
		document.getElementById("P").style.background = "url(images/default_12.jpg) top center no-repeat";
		document.getElementById("N").style.background = "url(images/default_14.jpg) top center no-repeat";
		document.getElementById("J").style.background = "url(images/default_16.jpg) top center no-repeat";
		document.getElementById("C").style.background = "url(images/default_18.jpg) right top no-repeat";
	}
	if(id =="P"){
		/*选项卡内容变换*/
		document.getElementById("DC").style.display ="none";
		document.getElementById("PC").style.display ="block";
		document.getElementById("NC").style.display ="none";
		document.getElementById("JC").style.display ="none";
		document.getElementById("CC").style.display ="none";
		
		document.getElementById("D").style.background = "url(images/default_1_10.jpg) left top  no-repeat";
		document.getElementById("P").style.background = "url(images/default_1_12.jpg) top center no-repeat";
		document.getElementById("N").style.background = "url(images/default_14.jpg) top center no-repeat";
		document.getElementById("J").style.background = "url(images/default_16.jpg) top center no-repeat";
		document.getElementById("C").style.background = "url(images/default_18.jpg) right top no-repeat";
	}
	if(id =="N"){
		/*选项卡内容变换*/
		document.getElementById("DC").style.display ="none";
		document.getElementById("PC").style.display ="none";
		document.getElementById("NC").style.display ="block";
		document.getElementById("JC").style.display ="none";
		document.getElementById("CC").style.display ="none";
		
		document.getElementById("D").style.background = "url(images/default_1_10.jpg) left top  no-repeat";
		document.getElementById("P").style.background = "url(images/default_12.jpg) top center no-repeat";
		document.getElementById("N").style.background = "url(images/default_2_03.jpg) top center no-repeat";
		document.getElementById("J").style.background = "url(images/default_16.jpg) top center no-repeat";
		document.getElementById("C").style.background = "url(images/default_18.jpg) right top no-repeat";
	}
	if(id =="J"){
		/*选项卡内容变换*/
		document.getElementById("DC").style.display ="none";
		document.getElementById("PC").style.display ="none";
		document.getElementById("NC").style.display ="none";
		document.getElementById("JC").style.display ="block";
		document.getElementById("CC").style.display ="none";
		/*选项卡的背景*/
		document.getElementById("D").style.background = "url(images/default_1_10.jpg) left top  no-repeat";
		document.getElementById("P").style.background = "url(images/default_12.jpg) top center no-repeat";
		document.getElementById("N").style.background = "url(images/default_14.jpg) top center no-repeat";
		document.getElementById("J").style.background = "url(images/default_4_03.jpg) top center no-repeat";
		document.getElementById("C").style.background = "url(images/default_18.jpg) right top no-repeat";
	}
	if(id =="C"){
		/*选项卡内容变换*/
		document.getElementById("DC").style.display ="none";
		document.getElementById("PC").style.display ="none";
		document.getElementById("NC").style.display ="none";
		document.getElementById("JC").style.display ="none";
		document.getElementById("CC").style.display ="block";
		/*选项卡的背景*/
		document.getElementById("D").style.background = "url(images/default_1_10.jpg) left top  no-repeat";
		document.getElementById("P").style.background = "url(images/default_12.jpg) top center no-repeat";
		document.getElementById("N").style.background = "url(images/default_14.jpg) top center no-repeat";
		document.getElementById("J").style.background = "url(images/default_16.jpg) top center no-repeat";
		document.getElementById("C").style.background = "url(images/default_3_03.jpg) right top no-repeat";
	}
}

//加入收藏夹
function addCookie() {　
	if (document.all) {
		window.external.addFavorite(document.location.href,document.title);
	}
	else if (window.sidebar) {
		window.sidebar.addPanel(document.title,document.location.href,"")
	}
}
// 设置首页
function setHomepage() {　 
	if (document.all) {
		document.body.style.behavior = 'url(#default#homepage)';
		document.body.setHomePage(document.location.href);
	}
	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',document.location.href);
	}
}


//上一页   下一页
function updown(id){
	if(id == "1"){
		document.getElementById("CK1").style.display = "none";
		document.getElementById("CK2").style.display = "block";
	}
	if(id == "2"){
		document.getElementById("CK2").style.display = "none";
		document.getElementById("CK1").style.display = "block";
	}
}