Split the queue code out from data.js into a dedicated queue.js file (also split...

[jquery.git] / src / css.js

diff --git a/src/css.js b/src/css.js
index ddd42b4..c36b6dc 100644 (file)
--- a/src/css.js
+++ b/src/css.js
@@ -5,8 +5,8 @@ var rexclude = /z-?index|font-?weight|opacity|zoom|line-?height/i,
        rfloat = /float/i,
        rdashAlpha = /-([a-z])/ig,
        rupper = /([A-Z])/g,
-       rnumpx = /^\d+(?:px)?$/i,
-       rnum = /^\d/,
+       rnumpx = /^-?\d+(?:px)?$/i,
+       rnum = /^-?\d/,
 
        // cache check for defaultView.getComputedStyle
        getComputedStyle = document.defaultView && document.defaultView.getComputedStyle,
@@ -52,8 +52,9 @@ jQuery.extend({
                                style.zoom = 1;
 
                                // Set the alpha filter to set the opacity
-                               style.filter = (style.filter || "").replace( ralpha, "" ) +
-                                       (parseInt( value ) + '' === "NaN" ? "" : "alpha(opacity=" + value * 100 + ")");
+                               var opacity = parseInt( value, 10 ) + '' === "NaN" ? "" : "alpha(opacity=" + value * 100 + ")";
+                               var filter = style.filter || jQuery.curCSS( elem, 'filter' ) || "";
+                               style.filter = ralpha.test(filter) ? filter.replace(ralpha, opacity) : opacity;
                        }
 
                        return style.filter && style.filter.indexOf("opacity=") >= 0 ?
@@ -199,17 +200,18 @@ jQuery.extend({
 });
 
 if ( jQuery.expr && jQuery.expr.filters ) {
-       jQuery.expr.filters.hidden = function(elem){
+       jQuery.expr.filters.hidden = function( elem ) {
                var width = elem.offsetWidth, height = elem.offsetHeight,
-                        force = /^tr$/i.test( elem.nodeName ); // ticket #4512
-               return ( width === 0 && height === 0 && !force ) ?
+                       skip = elem.nodeName.toLowerCase() === "tr";
+
+               return width === 0 && height === 0 && !skip ?
                        true :
-                               ( width !== 0 && height !== 0 && !force ) ?
-                                       false :
-                                               !!( jQuery.curCSS(elem, "display") === "none" );
+                       width > 0 && height > 0 && !skip ?
+                               false :
+                               jQuery.curCSS(elem, "display") === "none";
        };
 
-       jQuery.expr.filters.visible = function(elem){
-               return !jQuery.expr.filters.hidden(elem);
+       jQuery.expr.filters.visible = function( elem ) {
+               return !jQuery.expr.filters.hidden( elem );
        };
 }