// 默认obj为执行元素

// hover
	// 默认样式 .h , 默认hover样式 .hover
	// 自定义hover可使用 hover(obj, classname)
$(function(){
	$(".h").hover(function(){
		$(this).addclass("hover")
	}, function(){
		$(this).removeclass("hover")
	})
})
function hover(obj, classname) {
	obj.hover(function(){
		$(this).addclass(classname)
	}, function(){
		$(this).removeclass(classname)
	})
}

// tab
	// 默认焦点样式 .cur
	// 为防止xp系统opacity可能出现的锯齿或边缘模糊， 默认.tabbox效果.show() / .hide()
	// 拓展.tabbox成opacity， 需在.tabbox上加上 data-effect="true"
function tab(tabbtn, tabbox) {
	var tabbl = true;
	tabbtn.eq(0).addclass("cur")
	tabbox.eq(0).show()
	tabbtn.click(function(){
        var n = $(this).index();
        $(this).addclass("cur").siblings().removeclass("cur")
        if(tabbox.attr("data-effect") == "true"){
        	if(!tabbl){
        		return
        	}
        	tabbl = false;
        	tabbox.eq(n).stop().fadein(800).siblings().stop().fadeout(800, function(){
        		tabbl = true;
        	})
        }else{
        	tabbox.eq(n).show().siblings().hide()
        }
    })
}

// 图片全屏 / 图片充满整个父级
	// 默认box自带loading背景图
	// 默认obj hide
function fullbg(box, obj){
	box.css("background", "none")
	obj.eq(0).stop().fadein(1000)
	function resizebg() {
		obj.removeclass("w-f").removeclass("h-f").css("margin", 0)
		var boxr = box.outerwidth() / box.outerheight(),
			objr = obj.width() / obj.height();
		if( objr < boxr ) {
		    obj.addclass('w-f').css("margin-top", -(obj.height() - box.outerheight()) / 2);
		}else{
		    obj.addclass('h-f').css("margin-left", -(obj.width() - box.outerwidth()) / 2);
		}
	}
	$(window).resize(resizebg).trigger("resize");
}
// 视频全屏 / 视频充满整个父级 (video获取宽高有问题)
function videofull(obj, width, height){
	var $video = obj
	function resizebg() {
		$video.attr("width", "").attr("height", "").attr("style", "")
		var boxr = $('.top-video').outerwidth() / $('.top-video').outerheight(),
			objr = width / height;

		if( objr < boxr ) {
			$video.attr("width", "100%")
			var videoheight = $video.width() / objr
			var top = - (videoheight - $('.top-video').outerheight()) / 2 > 0 ? 0 : - (videoheight - $('.top-video').outerheight()) / 2
			$video.css("margin-top", top);
		}else{
			$video.attr("height", "100%")
			var videowidth = $video.height() * objr
			var left = - (videowidth - $('.top-video').outerwidth()) / 2 > 0 ? 0 : - (videowidth - $('.top-video').outerwidth()) / 2
		    $video.css("margin-left", left);
		}
	}
	$(window).resize(resizebg).trigger("resize");
}


// 标签进场效果
	// 用于多平级标签依次载入 默认标签具有position属性及opacuty: 0;
	// direction 从哪个方向进入
	// distance  进入到指定距离
	// number    平级标签的个数
	// time      进场动画的时间
	// delay     下一标签的延迟
	// callback  回调函数
function enter(obj, direction, distance, number, time, delay, callback) {
	// 从左往右，distance > 0
	if(direction == "left"){
		obj.stop().animate({
			left : distance,
			opacity : 1
		}, time)
		settimeout(function(){
			if(obj.next().index() != -1){
				enter(obj.next(), direction, distance, number, time, delay, callback)
			}else{
				settimeout(function(){
					callback = callback || function(){};
	    			callback ();
	    			return
				}, time - delay)
			}
		}, delay)
	}
	// 从上往下，distance > 0
	if(direction == "top"){
		obj.stop().animate({
			top : distance,
			opacity : 1
		}, time)
		settimeout(function(){
			if(obj.next().index() != -1){
				enter(obj.next(), direction, distance, number, time, delay, callback)
			}else{
				settimeout(function(){
					callback = callback || function(){};
	    			callback ();
	    			return
				}, time - delay)
			}
		}, delay)
	}
	// css3 x位移
	if(direction == "x"){
		obj.stop().transition({
			x : distance,
			opacity : 1
		}, time)
		settimeout(function(){
			if(obj.next().index() != -1){
				enter(obj.next(), direction, distance, number, time, delay, callback)
			}else{
				settimeout(function(){
					callback = callback || function(){};
	    			callback ();
	    			return
				}, time - delay)
			}
		}, delay)
	}
	// css3 y位移
	if(direction == "y"){
		obj.stop().transition({
			y : distance,
			opacity : 1
		}, time)
		settimeout(function(){
			if(obj.next().index() != -1){
				enter(obj.next(), direction, distance, number, time, delay, callback)
			}else{
				settimeout(function(){
					callback = callback || function(){};
	    			callback ();
	    			return
				}, time - delay)
			}
		}, delay)
	}
}

// 图片加载 调用方法
// _preloadimg([
	// 图片路径(数组形式)
// ],function(){

// })
function _preloadimg(b,e){var c=0,a={},d=0;for(src in b){d++}for(src in b){a[src]=new image();a[src].onload=function(){if(++c>=d){e(a)}};a[src].src=b[src]}};