js 比较灵活 优雅的语法特别美！ 传递参数的时候 ，就传递对象比较好！！

//function progress_fun(progress,span,wrapWidth,value  ){
function progress_fun(option){			
			var progress = option.progress;
			var span = option.span;
			var wrapWidth = option.wrapWidth;
			var value = option.value; 
			

			var now = 0;
			var timeId = null;
			
			timeId = setInterval(function(){
				now+=2;
				if(now==value){
					clearInterval(timeId);
				}
				span.text(now+'%');
				progress.width(now/100*wrapWidth);
			},50);
}

$(function(){
		progress_fun( {
		 progress:$('.fk_progress'),
		 span : $('.fk'),
		 wrapWidth : $('.wrap').width(),
		 value : 50,
		});
		
		progress_fun( {
		 progress:$('.yl_progress'),
		 span : $('.yl'),
		 wrapWidth : $('.wrap').width(),
		 value : 20,
		});  
		
		
		progress_fun( {
		 progress:$('.zs_progress'),
		 span : $('.zs'),
		 wrapWidth : $('.wrap').width(),
		 value : 80,
		});  
		  
			
});