function $(obj){
	return document.getElementById(obj);
}

//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++;
		}
	}
}

//屏蔽鼠标右键
function disabledRightButton(){
	document.oncontextmenu = function(e){return false;}
	document.onselectstart = function(e){return false;}
	if (navigator.userAgent.indexOf("Firefox") > -1){
		document.writeln("<style>body {-moz-user-select: none;}</style>");
	}
}

//设为首页
function setHomePage(){
	if(document.all){
		var obj = document.links(0);
		if (obj){
			obj.style.behavior = 'url(#default#homepage)';
			obj.setHomePage(window.location.href);
		}
  	}else{
		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]设置为'true'");
			}
		}
		var prefs = Components.classes['@mozilla.org/preferences-service;1'].getService(Components.interfaces.nsIPrefBranch);
		prefs.setCharPref('browser.startup.homepage', window.location.href);
   	}
}

//加入收藏
function addFavorite(){
	var url		= document.location.href;
	var title	= document.title;
	if (document.all){
		window.external.addFavorite(url,title);
	}else if (window.sidebar){
		window.sidebar.addPanel(title, url, "");
	}
}

//邮箱格式检查
function check_email(val){
	val = val.replace(/[ ]/g,"");;
	var myreg = /^([a-zA-Z0-9]+[_|\_|\.|\-]?)*[a-zA-Z0-9]+@([a-zA-Z0-9]+[_|\_|\.]?)*[a-zA-Z0-9]+\.[a-zA-Z]{2,3}$/;
	if(val!=""){
		if(!myreg.test(val)){
			return false;
		}else{
			return true;
		}
	}else{
		return false;
	}
}

//验证手机号码
function isMobilePhone(val)
{
	if(/^13\d{9}$/g.test(val)||(/^15[8,9]\d{8}$/g.test(val))){
		return true;
	}else{
		return false;
	}
}

//检查电话号码
function isTelephone(val){
	var reg=/^([0-9]|[\-])+$/g;
	if(val.length<7 || val.length>18){
		return false;
	}else{
		return reg.exec(val);
	}
}

//验证最大长度
function isMaxLen(o){
	var nMaxLen=o.getAttribute? parseInt(o.getAttribute("maxlength")):"";
	if(o.getAttribute && o.value.length>nMaxLen){
		o.value=o.value.substring(0,nMaxLen)
	}
}

//复制到剪贴板
function copyToClipboard(txt) {
	if(window.clipboardData) {
		window.clipboardData.clearData();
		window.clipboardData.setData("Text", txt);
	} else if(navigator.userAgent.indexOf("Opera") != -1) {
		window.location = txt;
	} else if (window.netscape) {
		try {
			netscape.security.PrivilegeManager.enablePrivilege("UniversalXPConnect");
		} catch (e) {
			alert("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'设置为'true'");
		}
		var clip = Components.classes['@mozilla.org/widget/clipboard;1'].createInstance(Components.interfaces.nsIClipboard);
		if (!clip)
			return;
		var trans = Components.classes['@mozilla.org/widget/transferable;1'].createInstance(Components.interfaces.nsITransferable);
		if (!trans)
			return;
		trans.addDataFlavor('text/unicode');
		var str = new Object();
		var len = new Object();
		var str = Components.classes["@mozilla.org/supports-string;1"].createInstance(Components.interfaces.nsISupportsString);
		var copytext = txt;
		str.data = copytext;
		trans.setTransferData("text/unicode",str,copytext.length*2);
		var clipid = Components.interfaces.nsIClipboard;
		if (!clip)
			return false;
		clip.setData(trans,null,clipid.kGlobalClipboard);
	}
	alert("复制成功！");
}

//+---------------------------------------------------
//| 页面内容滚动JS文件。
//| lh:     每次滚动的高度
//| speed:  滚动速度
//| delpay: 停留时间
//| id:     滚动的标签
//+---------------------------------------------------
function startmarquee(lh,speed,delay,id){
    var t;
    var p = false;
    var o = document.getElementById(id);
    o.innerHTML += o.innerHTML;
    o.onmouseover = function(){p=true}
    o.onmouseout = function(){p=false}
    o.scrollTop = 0;
    function start(){
        t=setInterval(scrolling,speed);
        if(!p) o.scrollTop += 2;
    }

    function scrolling(){
        if(o.scrollTop%lh!=0){
            o.scrollTop += 2;
            if(o.scrollTop>=o.scrollHeight/2) o.scrollTop = 0;
        }else{
            clearInterval(t);
            setTimeout(start,delay);
        }
    }
    setTimeout(start,delay);
}