ie8以下兼容进度条

//进度条
function jindutiao(inx,ev){
for(var j =0;j<inx.length;j++){
var val_= inx.eq(j).html();
var object1 = ev[0];
var imgLeft = -(val_*44+(val_*10));
if(imgLeft<=-5400){
imgLeft=-5400
}
ev.eq(j).css("backgroundPosition",imgLeft+'px'+'\t'+'0px');
}
}
jindutiao($('.dad'),$(".bg_quan"));