+
+function getWH( elem, name, extra ) {
+ var which = name === "width" ? cssWidth : cssHeight,
+ val = name === "width" ? elem.offsetWidth : elem.offsetHeight;
+
+ if ( extra === "border" ) {
+ return val;
+ }
+
+ jQuery.each( which, function() {
+ if ( !extra ) {
+ val -= parseFloat(jQuery.curCSS( elem, "padding" + this, true)) || 0;
+ }
+
+ if ( extra === "margin" ) {
+ val += parseFloat(jQuery.curCSS( elem, "margin" + this, true)) || 0;
+
+ } else {
+ val -= parseFloat(jQuery.curCSS( elem, "border" + this + "Width", true)) || 0;
+ }
+ });
+
+ return val;
+}
+
+if ( jQuery.expr && jQuery.expr.filters ) {
+ jQuery.expr.filters.hidden = function( elem ) {
+ var width = elem.offsetWidth, height = elem.offsetHeight,
+ skip = elem.nodeName.toLowerCase() === "tr";
+
+ return width === 0 && height === 0 && !skip ?
+ true :
+ width > 0 && height > 0 && !skip ?
+ false :
+ jQuery.curCSS(elem, "display") === "none";
+ };
+
+ jQuery.expr.filters.visible = function( elem ) {
+ return !jQuery.expr.filters.hidden( elem );
+ };
+}