maximize image

for (var i=0,il=document.images,r=window.innerWidth/window.innerHeight;i<il.length;i++) {im=il[i],r2=r2=im.naturalWidth/im.naturalHeight;if(r2<r){im.style.height=window.innerHeight-20}else{im.style.width=window.innerWidth-20};im.style.maxWidth="100%";im.style.marginBottom="150px";};