js代码

<script language="javascript">
function si(){
	var time = window.setInterval(function(){
		a=$("#line").width();
		b=(a/200*100).toFixed(0);
		$("#percent").html(b+"%");
		$("#percent").css({"left":(a-32)+"px"});
		if(b==100) {
			clearInterval(time);
			
			play.src = "pause.png";
		}
	},70);
}

function processerbar(time){
	$("#probar").css({"display":"block"});
	$("#line").each(function(i,item){
		var a=parseInt($(item).attr("w"));
		$(item).animate({
			width: a+"%"
		},time);
	});
   si();
};


	var onOff = true;
	$("#play").click(function(){
		
		if(onOff === true){
			processerbar(2000);
			play.src = "play.png";
			onOff= false;
		}else{
			$("#line").stop();
			play.src = "pause.png";
			onOff = true;
		}
		
	});

</script>

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