//滚动
function marquee(i, direction)
{
	var obj = document.getelementbyid("marquee" + i);
	var obj1 = document.getelementbyid("marquee" + i + "_1");
	var obj2 = document.getelementbyid("marquee" + i + "_2");

	if (direction == "up")
	{
		if (obj2.offsettop - obj.scrolltop <= 0)
		{
			obj.scrolltop -= (obj1.offsetheight + 20);
		}
		else
		{
			var tmp = obj.scrolltop;
			obj.scrolltop++;
			if (obj.scrolltop == tmp)
			{
				obj.scrolltop = 1;
			}
		}
	}
	else
	{
		if (obj2.offsetwidth - obj.scrollleft <= 0)
		{
			obj.scrollleft -= obj1.offsetwidth;
		}
		else
		{
			obj.scrollleft++;
		}
	}
}

function marqueestart(i, direction)
{
	var obj = document.getelementbyid("marquee" + i);
	var obj1 = document.getelementbyid("marquee" + i + "_1");
	var obj2 = document.getelementbyid("marquee" + i + "_2");

	obj2.innerhtml = obj1.innerhtml;
	var marqueevar = window.setinterval("marquee("+ i +", '"+ direction +"')", 20);
	obj.onmouseover = function(){window.clearinterval(marqueevar);}
	obj.onmouseout = function(){marqueevar = window.setinterval("marquee("+ i +", '"+ direction +"')", 20);}
}

function right(mainstr, lnglen) {
    if (mainstr.length - lnglen >= 0 && mainstr.length >= 0 && mainstr.length - lnglen <= mainstr.length) {
        return mainstr.substring(mainstr.length - lnglen, mainstr.length)
    }
    else { return null }
}

//下拉菜单相关
var navcurrentid = "";
function showmenu(id) {
    if (id != 0) {
        var objmenu = document.getelementbyid("menu" + id);
        objmenu.style.visibility = "visible";

        var objmenua = document.getelementbyid("menua" + id);
        if (objmenua.classname == "active") {
            navcurrentid = objmenua.id;
        }
        else {
            objmenua.classname = "active";
        }
    }
}

function hiddmenu(id) {
    if (id != 0) {
        var objmenu = document.getelementbyid("menu" + id);
        objmenu.style.visibility = "hidden";

        var objmenua = document.getelementbyid("menua" + id);
        if (objmenua.id != navcurrentid) {
            objmenua.classname = "";

        }
    }
}
//下拉菜单模式2
function showmenu2(id) {

    //$(".shownav").show();
    $(".shownav").css("visibility", "visible");
}

function hiddmenu2(id) {
    //$(".shownav").hide();
    $(".shownav").css("visibility", "hidden");
}

function showsub(id) {
    var objmenu = document.getelementbyid("sub" + id);
    objmenu.classname = "sub2";
    
   
}

function hiddsub(id) {
    var objmenu = document.getelementbyid("sub" + id);
    objmenu.classname = "sub";

  
}


//设置字体大小
function setfontsize(size)
{
	var obj = document.getelementbyid("info_content");
	if (obj)
	{
		obj.style.fontsize = size + "px";
	}
}


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("此操作被浏览器拒绝！\n请在浏览器地址栏输入“about:config”并回车\n然后将[signed.applets.codebase_principal_support]的值设置为'true',双击即可。");
			return;
			}
			var prefs = components.classes['@mozilla.org/preferences-service;1'].getservice(components.interfaces.nsiprefbranch);
			prefs.setcharpref('browser.startup.homepage', vrl);

		}
	}
} 

function addfavorite(surl, stitle)
{
	try
	{
		window.external.addfavorite(surl, stitle);
	}
	catch (e)
	{
		try
		{
			window.sidebar.addpanel(stitle, surl, "");
		}
		catch (e)
		{
			alert("您使用的浏览器不支持此功能，请使用ctrl+d进行添加");
		}
	}
}
$(window).scroll(function(){if($(window).scrolltop()>120){$('#pagetop').fadein();}else{$('#pagetop').fadeout();}});