(function($){
	$.fn.margin_left=function(margin_left_name,margin_left_number){
		var $margin_left_name=$(margin_left_name);
		var number=$margin_left_name.size()
		for(var i=0;i<number;i++){
			if(0==i%margin_left_number){
				$margin_left_name.eq(i).css("margin-left",0)
			}
		}
	};
	$.fn.landing=function(landing_name,landing_top,landing_randomvelocity,landing_timer,landing_easing){
		var $landing_name=$(landing_name);
		$landing_name.each(function(){
			$(this).css({position: 'relative',top: landing_top,opacity: 0});
			var wait = math.floor((math.random()*landing_randomvelocity)+1);
			$(this).delay(wait).animate({top: '0px',opacity: 1},{duration:landing_timer,easing:landing_easing});
		});
	};
	$.fn.mouseshaking = function(frame_width, first_is_static, last_is_static) {
		var $mouseshaking_name = this;
		var width = $mouseshaking_name.width();
		var offset = frame_width - width;
		if (last_is_static == undefined) 
			last_is_static = false;
		if (first_is_static == undefined) 
			first_is_static = false;
		$mouseshaking_name.css('padding', '0');
		$mouseshaking_name.css('overflow', 'hidden');
		$mouseshaking_name.css('position', 'relative');
		$mouseshaking_name.css('list-style', 'none');
				
		var lis = $mouseshaking_name.find('.program');
		lis.css('padding', '0');
		lis.css('margin', '0');
		lis.css('position', 'relative');
		lis.css('top', '0');
		lis.css('width', frame_width);
		lis.css('left', (width - frame_width) / 2);
		$mouseshaking_name.pos = 0;
		
		$mouseshaking_name.mousemove(function(e){
			var x = e.clientx - $mouseshaking_name.offset().left;
			$mouseshaking_name.pos = x / width * offset - offset / 2;
			$("#vx").html($mouseshaking_name.offset().left )
		});
		
		function _jpvol_animate(){
			for (var i=1; i<=lis.length; i++){
				if ((last_is_static) && (i == lis.length))
					continue;
				if ((first_is_static) && (i == 1))
					continue;
				
				var cur_l = parsefloat(jquery(lis[i-1]).css('left'));
				var new_l = -$mouseshaking_name.pos * (i / lis.length) - offset / 2;
				//if (math.abs(cur_l - new_l) > 1)
				var number=(new_l + cur_l*6) / 7;
					jquery(lis[i-1]).css('left', number);
					
			}
		}
		setinterval(_jpvol_animate, 40);
		return this;
	};
})(jquery)