(function(){function e(){var b=document.getElementById("header");if(b){var a="";if(b.currentStyle)a=[b.currentStyle.backgroundPositionX,b.currentStyle.backgroundPositionY].join(" ");else if(window.getComputedStyle)a=window.getComputedStyle(b,null).backgroundPosition;if(a!=""){a=a.split(" ");var c=parseInt(a[0],10);c+=d;if(c<0||c>100){d=-d;c+=d}b.style.backgroundPosition=[c,"% ",a[1]].join("")}}}var d=1;setInterval(e,1E3)})(); 可以給沒有壓縮的版本參考看看嗎 |