DzzOffice/user/scripts/setbacksize.js

function setImage(e,t){var m=document.documentElement.clientWidth,n=document.documentElement.clientHeight;m/n>e/t?(w=m,h=w*(t/e)):(h=n,w=h*(e/t)),document.getElementById("imgbg")&&(document.getElementById("imgbg").style.width=w+"px",document.getElementById("imgbg").style.height=h+"px")}document.getElementById("imgbg")&&jQuery.getScript("static/js/imgReady.js",function(){imgReady(document.getElementById("imgbg").src,function(){setImage(this.width,this.height)})});