// JavaScript Document
//跑馬燈
$(document).ready(function(){
	var $pic_marquee_a = $('#pic_marquee').find('a')
	var $pic_marquee_covers = $('#pic_marquee').find('.covers');
	var moveTimer;//計時器
	//左移
	var moveCoversLeft = function(){
		if (parseFloat($pic_marquee_covers.css('left'))<0)
		{
			$pic_marquee_covers.css('left', parseFloat($pic_marquee_covers.css('left'))+1+'px');
			moveTimer = setTimeout(moveCoversLeft, 1);
		};
	};
	//右移
	var moveCoversRight = function(){
		if ($pic_marquee_covers.width()+parseFloat($pic_marquee_covers.css('left'))-$('#pic_marquee').width()>0)
		{
			$pic_marquee_covers.css('left', parseFloat($pic_marquee_covers.css('left'))-1+'px');
			moveTimer = setTimeout(moveCoversRight, 1);
		};
	};
	//設定容器寬
	$pic_marquee_covers.width($pic_marquee_a.length*$pic_marquee_a.width());
	$('#pic_marquee').css('overflow', 'hidden');
	//左移按鈕
	$('#btnPrevPic').hover(function(){
		moveTimer = setTimeout(moveCoversLeft, 1);
	}, function(){
		clearTimeout(moveTimer);
	});
	//右移按鈕
	$('#btnNextPic').hover(function(){
		moveTimer = setTimeout(moveCoversRight, 1);
	}, function(){
		clearTimeout(moveTimer);
	});
});