(function($){
	/* hoverIntent by Brian Cherne */
	$.fn.hoverIntent = function(f,g) {
		// default configuration options
		var cfg = {
			sensitivity: 7,
			interval: 100,
			timeout: 0
		};
		// override configuration options with user supplied object
		cfg = $.extend(cfg, g ? { over: f, out: g } : f );

		// instantiate variables
		// cX, cY = current X and Y position of mouse, updated by mousemove event
		// pX, pY = previous X and Y position of mouse, set by mouseover and polling interval
		var cX, cY, pX, pY;

		// A private function for getting mouse position
		var track = function(ev) {
			cX = ev.pageX;
			cY = ev.pageY;
		};

		// A private function for comparing current and previous mouse position
		var compare = function(ev,ob) {
			ob.hoverIntent_t = clearTimeout(ob.hoverIntent_t);
			// compare mouse positions to see if they've crossed the threshold
			if ( ( Math.abs(pX-cX) + Math.abs(pY-cY) ) < cfg.sensitivity ) {
				$(ob).unbind("mousemove",track);
				// set hoverIntent state to true (so mouseOut can be called)
				ob.hoverIntent_s = 1;
				return cfg.over.apply(ob,[ev]);
			} else {
				// set previous coordinates for next time
				pX = cX; pY = cY;
				// use self-calling timeout, guarantees intervals are spaced out properly (avoids JavaScript timer bugs)
				ob.hoverIntent_t = setTimeout( function(){compare(ev, ob);} , cfg.interval );
			}
		};

		// A private function for delaying the mouseOut function
		var delay = function(ev,ob) {
			ob.hoverIntent_t = clearTimeout(ob.hoverIntent_t);
			ob.hoverIntent_s = 0;
			return cfg.out.apply(ob,[ev]);
		};

		// A private function for handling mouse 'hovering'
		var handleHover = function(e) {
			// next three lines copied from jQuery.hover, ignore children onMouseOver/onMouseOut
			var p = (e.type == "mouseover" ? e.fromElement : e.toElement) || e.relatedTarget;
			while ( p && p != this ) { try { p = p.parentNode; } catch(e) { p = this; } }
			if ( p == this ) { return false; }

			// copy objects to be passed into t (required for event object to be passed in IE)
			var ev = jQuery.extend({},e);
			var ob = this;

			// cancel hoverIntent timer if it exists
			if (ob.hoverIntent_t) { ob.hoverIntent_t = clearTimeout(ob.hoverIntent_t); }

			// else e.type == "onmouseover"
			if (e.type == "mouseover") {
				// set "previous" X and Y position based on initial entry point
				pX = ev.pageX; pY = ev.pageY;
				// update "current" X and Y position based on mousemove
				$(ob).bind("mousemove",track);
				// start polling interval (self-calling timeout) to compare mouse coordinates over time
				if (ob.hoverIntent_s != 1) { ob.hoverIntent_t = setTimeout( function(){compare(ev,ob);} , cfg.interval );}

			// else e.type == "onmouseout"
			} else {
				// unbind expensive mousemove event
				$(ob).unbind("mousemove",track);
				// if hoverIntent state is true, then call the mouseOut function after the specified delay
				if (ob.hoverIntent_s == 1) { ob.hoverIntent_t = setTimeout( function(){delay(ev,ob);} , cfg.timeout );}
			}
		};

		// bind the function to the two event listeners
		return this.mouseover(handleHover).mouseout(handleHover);
	};
	
})(jQuery);

// 首页产品滚动 //
$.fn.imgscroll = function(o){
	var defaults = {
		speed: 30,
		amount: 0,
		width: 1,
		dir: "left"
	};
	o = $.extend(defaults, o);
	
	return this.each(function(){
		var _li = $("li", this);
		_li.parent().parent().css({overflow: "hidden", position: "relative"}); //div
		_li.parent().css({margin: "0", padding: "0", overflow: "hidden", position: "relative", "list-style": "none"}); //ul
		_li.css({position: "relative", overflow: "hidden"}); //li
		if(o.dir == "left") _li.css({float: "left"});
		
		//初始大小
		var _li_size = 0;
		for(var i=0; i<_li.size(); i++)
			_li_size += o.dir == "left" ? _li.eq(i).outerWidth(true) : _li.eq(i).outerHeight(true);
		
		//循环所需要的元素
		if(o.dir == "left") _li.parent().css({width: (_li_size*3)+"px"});
		_li.parent().empty().append(_li.clone()).append(_li.clone()).append(_li.clone());
		_li = $("li", this);

		//滚动
		var _li_scroll = 0;
		function goto(){
			_li_scroll += o.width;
			if(_li_scroll > _li_size)
			{
				_li_scroll = 0;
				_li.parent().css(o.dir == "left" ? { left : -_li_scroll } : { top : -_li_scroll });
				_li_scroll += o.width;
			}
				_li.parent().animate(o.dir == "left" ? { left : -_li_scroll } : { top : -_li_scroll }, o.amount);
		}
		
		//开始
		var move = setInterval(function(){ goto(); }, o.speed);
		_li.parent().hover(function(){
			clearInterval(move);
		},function(){
			clearInterval(move);
			move = setInterval(function(){ goto(); }, o.speed);
		});
	});
};