function setEltClip (elt, cliptop, clipright, clipbottom, clipleft) { if (is.nav4up) { elt.clip.left = clipleft; elt.clip.top = cliptop; elt.clip.right = clipright; elt.clip.bottom = clipbottom; } else if (is.ie4up) elt.clip = 'rect(' + cliptop + ' ' + clipright + ' ' + clipbottom + ' ' + clipleft +')'; else return (null); }