// 浏览器判断
var isIE6 = (navigator.userAgent.toLowerCase().indexOf("msie 6") != -1);
var isIE = (navigator.userAgent.toLowerCase().indexOf("msie") != -1);

/*-----------------------------------------------------------------------------------------/
 * JQuery PlugIn - Slide Show(or, Switch Tab). Based On JQuery 1.2.6+.
 * JQuery滑动切换插件 ver 1.0.0
 *
 * defaultIndex 	- 默认选中的标签索引，从0开始
 * titOnClassName	- 标签选中时的样式
 * titCell			- 自定义标题标签，支持选择符
 * mainCell			- 自定义标题标签，支持选择符
 * delayTime		- 延迟触发时间. 当这个时间小于切换动画效果时间时, 动画将被禁用
 * trigger			- 滑动触发方式. 默认为click, 可选择mouseover
 * effect			- 切换动画. 默认不使用动画. 目前仅提供fade(淡出), slide(向下展开)两种
 * debug			- 调试模式. 默认关闭
/*----------------------------------------------------------------------------------------*/

jQuery.fn.switchTab = function(settings) {
	settings = jQuery.extend({//可配置参数
		defaultIndex: 0,
		titOnClassName: "on",
		titCell: "dt span",
		mainCell: "dd",
		delayTime: 250,
		trigger: "click",
		effect: "",
		debug: ""
	},
	settings,
	{//插件信息
		version: 100
	});

	this.each(function() {
		var st;
		var curTagIndex = -1;
		var obj = jQuery(this);

		//切换显示处理
		var ShowSTCon = function (i){
			if(i != curTagIndex){
				obj.find(settings.titCell + ":eq(" + curTagIndex + ")").removeClass(settings.titOnClassName);
				obj.find(settings.mainCell).hide();
				obj.find(settings.titCell + ":eq(" + i + ")").addClass(settings.titOnClassName);
				if(settings.delayTime <250 && settings.effect != "")settings.effect = "";
				if(settings.effect == "fade"){
					obj.find(settings.mainCell + ":eq(" + i + ")").fadeIn({queue: false, duration: 250});
				}else if(settings.effect == "slide"){
					obj.find(settings.mainCell + ":eq(" + i + ")").slideDown({queue: false, duration: 250});
				}else{
					obj.find(settings.mainCell + ":eq(" + i + ")").show();
				}
				curTagIndex = i;
			}
		};
		
		//根据defaultIndex初始化
		ShowSTCon(settings.defaultIndex);

		//处理交互事件
		obj.find(settings.titCell).each(function(i, ele){
			if(settings.trigger=="click"){
				jQuery(ele).click(function(){
					ShowSTCon(i);
				});
			}else if(settings.delayTime > 0){
				jQuery(ele).hover(function(){
					st = setTimeout(function(){//延时触发
						ShowSTCon(i);
						st = null;
					}, settings.delayTime);
				},function(){
					if(st!=null)clearTimeout(st);
				});
			}else{
				jQuery(ele).mouseover(function(){
					ShowSTCon(i);
				});
			}
		});
	});
	if(settings.debug!="")alert(settings[settings.debug]);
	return this;
};



//垂直向上滚动
//wrapper, 容器选择符
//sItem, 滚动元素选择符
jQuery.fn.scrollUp = function(settings) {
	settings = jQuery.extend({
		delayTime: 4000,
		sItem: 'li'
	}, settings);

	var obj = jQuery(this);
	this.each(function() {
		var stepScroll = function(){
			var curItem = obj.find(settings.sItem + ":first");
			curItem.animate({
				marginTop: "-" + curItem.height()
			},
			300,
			"",
			function(){
				curItem.appendTo(obj);
				curItem.css("margin-top", "0px");
			});
		};
		setInterval(stepScroll, settings.delayTime);
	});
	return this;
};


//内容无缝滚动
function Marquee(marqueeBox, delaytime, direction){
	if(delaytime == undefined)delaytime = 50;
	if(direction == undefined)direction = "up";
	var oMarquee = jQuery(marqueeBox);
	var oMarqueeCon = oMarquee.find("ul");
	var oMarqueeCopy = oMarqueeCon.clone(true).insertAfter(oMarqueeCon);

	var ScrollUp = function(){
		if(oMarqueeCopy[0].offsetHeight-oMarquee[0].scrollTop<=0){
			oMarquee[0].scrollTop = 0;
		}else{
			oMarquee[0].scrollTop++;
		}
	}
	
	var ScrollLeft = function(){
		if(oMarqueeCopy[0].offsetWidth-oMarquee[0].scrollLeft<=0){
			oMarquee[0].scrollLeft = 0;
		}else{
			oMarquee[0].scrollLeft++;
		}
	}
	
	switch(direction){
		case "left":
			var oScroll=setInterval(ScrollLeft, delaytime);
			oMarquee.hover(function(){
				clearInterval(oScroll);
			}, function(){
				oScroll=setInterval(ScrollLeft, delaytime);
			});
			break;
		case "up":
		default:
			var oScroll = setInterval(ScrollUp, delaytime);
			oMarquee.hover(function(){
				clearInterval(oScroll);
			}, function(){
				oScroll=setInterval(ScrollUp, delaytime);
			});
	}
}




function hover(obj, className){
    jQuery(obj).hover(function(){
        jQuery(this).addClass(className);
    },function(){
        jQuery(this).removeClass(className);
    });
}



//列高度统一
function HeightFix(column, column2, offset){
	var oCol = jQuery(column);
	var oCol2 = jQuery(column2);
	if(offset == undefined)offset = 0;
	if(oCol.height() > oCol2.height()){
		oCol2.height(oCol.height() - offset);
	}else{
		oCol.height(oCol2.height() - offset);
	}
}