function my_void(){
	return true;
}

//下拉导航
function NavTab(id, tTag, tClass, cTag, cClass, eve, eve2) {
    var t = document.getElementById(id).getElementsByTagName(tTag);
    var c = document.getElementById(id).getElementsByTagName(cTag);
    var tt = [];
    var cc = [];
    for (i = 0; i < t.length; i++) { //获取对应t
        if (t[i].className == tClass) {
            tt.push(t[i]);
        }
    }
    for (i = 0; i < c.length; i++) { //获取对应c
        if (c[i].className == cClass) {
            cc.push(c[i]);
        }
    }
	for (i = 0; i < tt.length; i++) { //显示标签
        tt[i].temp = i; //alert(this.temp)
        tt[i][eve] = function(){
            for (i = 0; i < tt.length; i++) {
                tt[i].className = "nav_menu"
                cc[i].className = "sub_menu"
            }
            tt[this.temp].className = "nav_menu nav_menu_selected"
            cc[this.temp].className = "sub_menu sub_menu_selected"
	};
    }
	for (i = 0; i < tt.length; i++) { //隐藏标签
        tt[i].temp = i; //alert(this.temp)
        tt[i][eve2] = function() {
            for (i = 0; i < tt.length; i++) {
                tt[i].className = "nav_menu"
                cc[i].className = "sub_menu"
            }
        }
    }
}
//tabMenu
function TabMenu(id, tTag, tClass, cTag, cClass, eve, num) {
    var t = document.getElementById(id).getElementsByTagName(tTag);
    var c = document.getElementById(id).getElementsByTagName(cTag);
    var tt = [];
    var cc = [];
    for (i = 0; i < t.length; i++) { //获取对应t
        if (t[i].className == tClass) {
            tt.push(t[i]);
        }
    }
    for (i = 0; i < c.length; i++) { //获取对应c
        if (c[i].className == cClass) {
            cc.push(c[i]);
        }
    }
	tt[num].className = "t t_selected"
    cc[num].className = "c c_selected"
	var iniH = document.getElementById(id).offsetHeight
	var tempH =	cc[num].offsetHeight
	iniH>tempH ? document.getElementById(id).style.height=40+iniH+'px' : document.getElementById(id).style.height=40+tempH+'px';
	for (i = 0; i < tt.length; i++) { //显示标签
        tt[i].temp = i; //alert(this.temp)
        tt[i][eve] = function() {
            for (i = 0; i < tt.length; i++) {
                tt[i].className = "t"
                cc[i].className = "c"
            }
            tt[this.temp].className = "t t_selected"
            cc[this.temp].className = "c c_selected"
			var tempH =	cc[this.temp].offsetHeight
			iniH>tempH ? document.getElementById(id).style.height=40+iniH+'px' : document.getElementById(id).style.height=40+tempH+'px';
        }
    }
}
//滚动文字
function srcMarquee(){
	this.ID = document.getElementById(arguments[0]);
	if(!this.ID){this.ID = -1;return;}
	this.Direction = this.Width = this.Height = this.DelayTime = this.WaitTime = this.Correct = this.CTL = this.StartID = this.Stop = this.MouseOver = 0;
	this.Step = 1;
	this.Timer = 30;
	this.DirectionArray = {"top":0 , "bottom":1 , "left":2 , "right":3};
	if(typeof arguments[1] == "number")this.Direction = arguments[1];
	if(typeof arguments[2] == "number")this.Step = arguments[2];
	if(typeof arguments[3] == "number")this.Width = arguments[3];
	if(typeof arguments[4] == "number")this.Height = arguments[4];
	if(typeof arguments[5] == "number")this.Timer = arguments[5];
	if(typeof arguments[6] == "number")this.DelayTime = arguments[6];
	if(typeof arguments[7] == "number")this.WaitTime = arguments[7];
	if(typeof arguments[8] == "number")this.ScrollStep = arguments[8]
	this.ID.style.overflow = this.ID.style.overflowX = this.ID.style.overflowY = "hidden";
	this.ID.noWrap = true;
	this.IsNotOpera = (navigator.userAgent.toLowerCase().indexOf("opera") == -1);
	if(arguments.length >= 7)this.Start();
	}
	srcMarquee.prototype.Start = function(){
	if(this.ID == -1)return;
	if(this.WaitTime < 800)this.WaitTime = 800;
	if(this.Timer < 20)this.Timer = 20;
	if(this.Width == 0)this.Width = parseInt(this.ID.style.width);
	if(this.Height == 0)this.Height = parseInt(this.ID.style.height);
	if(typeof this.Direction == "string")this.Direction = this.DirectionArray[this.Direction.toString().toLowerCase()];
	this.HalfWidth = Math.round(this.Width / 2);
	this.BakStep = this.Step;
	this.ID.style.width = this.Width;
	this.ID.style.height = this.Height;
	if(typeof this.ScrollStep != "number")this.ScrollStep = this.Direction > 1 ? this.Width : this.Height;
	var msobj = this;
	var timer = this.Timer;
	var delaytime = this.DelayTime;
	var waittime = this.WaitTime;
	msobj.StartID = function(){msobj.Scroll()}
	msobj.Continue = function(){
	if(msobj.MouseOver == 1){
	setTimeout(msobj.Continue,delaytime);
		 }
		 else{ clearInterval(msobj.TimerID);
	msobj.CTL = msobj.Stop = 0;
	msobj.TimerID = setInterval(msobj.StartID,timer);
		 }
		}
	msobj.Pause = function(){
	msobj.Stop = 1;
	clearInterval(msobj.TimerID);
	setTimeout(msobj.Continue,delaytime);
		}
	msobj.Begin = function(){
	   msobj.ClientScroll = msobj.Direction > 1 ? msobj.ID.scrollWidth : msobj.ID.scrollHeight;
	   if((msobj.Direction <= 1 && msobj.ClientScroll <msobj.Height) || (msobj.Direction > 1 && msobj.ClientScroll <msobj.Width))return;
	   msobj.ID.innerHTML += msobj.ID.innerHTML;
	   msobj.TimerID = setInterval(msobj.StartID,timer);
	   if(msobj.ScrollStep < 0)return;
	   msobj.ID.onmousemove = function(event){
		   if(msobj.ScrollStep == 0 && msobj.Direction > 1){
	var event = event || window.event;
	if(window.event){
	if(msobj.IsNotOpera){msobj.EventLeft = event.srcElement.id == msobj.ID.id ? event.offsetX - msobj.ID.scrollLeft : event.srcElement.offsetLeft - msobj.ID.scrollLeft + event.offsetX;}
	else{msobj.ScrollStep = null;return;}
	}
	else{msobj.EventLeft = event.layerX - msobj.ID.scrollLeft;}
	msobj.Direction = msobj.EventLeft > msobj.HalfWidth ? 3 : 2;
	msobj.AbsCenter = Math.abs(msobj.HalfWidth - msobj.EventLeft);
	msobj.Step = Math.round(msobj.AbsCenter * (msobj.BakStep*2) / msobj.HalfWidth);
	}
	}
	msobj.ID.onmouseover = function(){
	if(msobj.ScrollStep == 0)return;
	msobj.MouseOver = 1;
	clearInterval(msobj.TimerID);
	}
	msobj.ID.onmouseout = function(){
	if(msobj.ScrollStep == 0){
	if(msobj.Step == 0)msobj.Step = 1;
	return;
	}
	msobj.MouseOver = 0;
	if(msobj.Stop == 0){
	clearInterval(msobj.TimerID);
	msobj.TimerID = setInterval(msobj.StartID,timer);
	}}}
	setTimeout(msobj.Begin,waittime);
	}
	srcMarquee.prototype.Scroll = function(){
	switch(this.Direction){
	case 0:
	this.CTL += this.Step;
	if(this.CTL >= this.ScrollStep && this.DelayTime > 0){
	this.ID.scrollTop += this.ScrollStep + this.Step - this.CTL;
	this.Pause();
	return;
	}
	else{
	if(this.ID.scrollTop >= this.ClientScroll){this.ID.scrollTop -= this.ClientScroll;}
	this.ID.scrollTop += this.Step;
	}
	break;
	case 1:
	this.CTL += this.Step;
	if(this.CTL >= this.ScrollStep && this.DelayTime > 0){
	this.ID.scrollTop -= this.ScrollStep + this.Step - this.CTL;
	this.Pause();
	return;
	}
	else{
	if(this.ID.scrollTop <= 0){this.ID.scrollTop += this.ClientScroll;}
	this.ID.scrollTop -= this.Step;
	}
	break;
	case 2:
	this.CTL += this.Step;
	if(this.CTL >= this.ScrollStep && this.DelayTime > 0){
	this.ID.scrollLeft += this.ScrollStep + this.Step - this.CTL;
	this.Pause();
	return;
	}
	else{
	if(this.ID.scrollLeft >= this.ClientScroll){this.ID.scrollLeft -= this.ClientScroll;}
	this.ID.scrollLeft += this.Step;
	}
	break;
	case 3:
	this.CTL += this.Step;
	if(this.CTL >= this.ScrollStep && this.DelayTime > 0){
	this.ID.scrollLeft -= this.ScrollStep + this.Step - this.CTL;
	this.Pause();
	return;
	}
	else{
	if(this.ID.scrollLeft <= 0){this.ID.scrollLeft += this.ClientScroll;}
	this.ID.scrollLeft -= this.Step;
	}
	break;
	}
} 
//弹出层
function Popload(vSrc,ww,hh,ss){//蒙版生成div+iframe
	var pop_Box, pop_Iframe, pop_Win
	var h = Math.max(document.documentElement.scrollHeight,document.documentElement.clientHeight) + 'px';
	var w = document.documentElement.scrollWidth + 'px';
	var popCss = "background:#000;opacity:0.6;filter:alpha(opacity=60);position:absolute;left:0;top:0;overflow:hidden;"
	var exsits = document.getElementById("popBox");
	if (!exsits) {
		pop_Box = document.createElement("div");pop_Box.id = "popBox";
		document.getElementsByTagName("body")[0].appendChild(pop_Box);
		pop_Box.style.cssText = popCss;pop_Box.style.zIndex = "10";
		pop_Box.style.height = h;pop_Box.style.width = w;
		
		pop_Iframe = document.createElement("iframe");pop_Iframe.id = "popIframe";
		document.getElementsByTagName("body")[0].appendChild(pop_Iframe);	
		pop_Iframe.style.cssText = popCss;pop_Iframe.style.zIndex = "9";
		pop_Iframe.style.height = h;pop_Iframe.style.width = (parseInt(w)-5)+"px";
	}
	pop_Win = document.createElement("iframe");pop_Win.id = "pop_Win";
	document.getElementsByTagName("body")[0].appendChild(pop_Win);	
	pop_Win.src = vSrc;
	pop_Win.style.position = "absolute";
	pop_Win.style.zIndex = "11";
	pop_Win.width = ww;
	pop_Win.height = hh;
	pop_Win.marginHeight="0"
	pop_Win.marginWidth="0"
	pop_Win.frameBorder="0"
	pop_Win.scrolling="no"
	pop_Win.style.top = document.documentElement.scrollTop + 'px';
	pop_Win.style.left = (document.documentElement.clientWidth/2-pop_Win.offsetWidth/2) + 'px';
	
	pop_Box.onclick=function(){
		document.getElementsByTagName("body")[0].removeChild(pop_Win);
		document.getElementsByTagName("body")[0].removeChild(pop_Box);
		document.getElementsByTagName("body")[0].removeChild(pop_Iframe);
	}
}