function qiehuan(num){
		$("#menu_con div[@class=mshow]").addClass('mhide');
		$("#menu_con div[@class=mshow]").removeClass('mshow');
		$("#menu a[@class=nav_on]").toggleClass('nav_on');

			id=num;
				$("#qh_con"+id).removeClass('mhide');
				$("#qh_con"+id).addClass('mshow');
				$("#mynav"+id).toggleClass("nav_on");
			
	}

/*标签*/
function selectTag(showContent,selfObj){
	// 操作标签
	var tag = document.getElementById("tags").getElementsByTagName("li");
	var taglength = tag.length;
	for(i=0; i<taglength; i++){
		tag[i].className = "";
	}
	selfObj.parentNode.className = "selectTag";
	// 操作内容
	for(i=0; j=document.getElementById("tagContent"+i); i++){
		j.style.display = "none";
	}
	document.getElementById(showContent).style.display = "block";
	
	
}

function checksubmit(){
	if(document.getElementById('subtitle_kl').value==''){
		alert('请输入查询关键词!');
		document.getElementById('subtitle_kl').focus();
		return false;
	}
	
}

/*图片连续滚动*/

var t=$("demo").scrollWidth;
$("demo1").innerHTML+=$("demo1").innerHTML;
function doMarquee()
{
$("demo").scrollLeft=$("demo").scrollLeft<$("demo").scrollWidth-$("demo").offsetWidth?$("demo").scrollLeft+1:t-$("demo").offsetWidth;
}
function doscroll()
{
  sc=setInterval(doMarquee,20);
}
function stopscroll()
{
  clearInterval(sc);
}
doscroll();


function setHome(obj,url){
	try {
		obj.style.behavior = 'url'+'(#default#homepage)';
		obj.setHomePage(url);
	} 
	catch (e) {
		if (window.netscape) {
			try {
				netscape.security.PrivilegeManager.enablePrivilege("UniversalXPConnect");
			} 
			catch (e) {
				alert("抱歉！您的浏览器不支持直接设为首页。请在浏览器地址栏输入“about:config”并回车然后将[signed.applets.codebase_principal_support]设置为“true”，点击“加入收藏”后忽略安全提示，即可设置成功。");
			}
			var prefs = Components.classes['@mozilla.org/preferences-service;1'].getService(Components.interfaces.nsIPrefBranch);
            prefs.setCharPref('browser.startup.homepage',url);
		}
	}
}