css3 矩阵 js旋转过程运算

var j = 290,cosVal,sinVal,select_ui = $("#p1 .m1");    

t = setInterval(function(){
     cosVal = Math.cos(j * Math.PI / 180);
     sinVal = Math.sin(j * Math.PI / 180);
     //console.info('')
     select_ui.css("-webkit-transform","matrix("+cosVal.toFixed(6)+","+(-sinVal.toFixed(6))+","+sinVal.toFixed(6)+","+cosVal.toFixed(6)+",0,65)");
     if(j >= 360){
      clearInterval(t);

     }else{
      j+=5;
     }
    },100);