if ( document.documentElement.currentStyle ) {
currentStyle = function( elem, name ) {
- var left, rsLeft,
+ var left,
ret = elem.currentStyle && elem.currentStyle[ name ],
+ rsLeft = elem.runtimeStyle && elem.runtimeStyle[ name ],
style = elem.style;
// From the awesome hack by Dean Edwards
if ( !rnumpx.test( ret ) && rnum.test( ret ) ) {
// Remember the original values
left = style.left;
- rsLeft = elem.runtimeStyle.left;
// Put in the new values to get a computed value out
- elem.runtimeStyle.left = elem.currentStyle.left;
+ if ( rsLeft ) {
+ elem.runtimeStyle.left = elem.currentStyle.left;
+ }
style.left = name === "fontSize" ? "1em" : (ret || 0);
ret = style.pixelLeft + "px";
// Revert the changed values
style.left = left;
- elem.runtimeStyle.left = rsLeft;
+ if ( rsLeft ) {
+ elem.runtimeStyle.left = rsLeft;
+ }
}
return ret === "" ? "auto" : ret;