X-Git-Url: http://git.asbjorn.biz/?a=blobdiff_plain;f=src%2Fsupport.js;h=299fbd2774fe52bd526a9538a46d68fa4ce1857d;hb=0229b83f7e5bf64edb2888ab349bedcd1a45e7c1;hp=cddd3dc3b962af886a59cf9d3c6468bfe66b787d;hpb=b3ccf2f2881d9ad988aba1cf3ccffb810063ab29;p=jquery.git

diff --git a/src/support.js b/src/support.js
index cddd3dc..299fbd2 100644
--- a/src/support.js
+++ b/src/support.js
@@ -1,3 +1,5 @@
+(function( jQuery ) {
+
 (function() {
 
 	jQuery.support = {};
@@ -11,7 +13,9 @@
 	div.innerHTML = "   <link/><table></table><a href='/a' style='color:red;float:left;opacity:.55;'>a</a><input type='checkbox'/>";
 
 	var all = div.getElementsByTagName("*"),
-		a = div.getElementsByTagName("a")[0];
+		a = div.getElementsByTagName("a")[0],
+		select = document.createElement("select"),
+		opt = select.appendChild( document.createElement("option") );
 
 	// Can't get basic test support
 	if ( !all || !all.length || !a ) {
@@ -54,15 +58,22 @@
 
 		// Make sure that a selected-by-default option has a working selected property.
 		// (WebKit defaults to false instead of true, IE too, if it's in an optgroup)
-		optSelected: document.createElement("select").appendChild( document.createElement("option") ).selected,
+		optSelected: opt.selected,
 
 		// Will be defined later
+		optDisabled: false,
 		checkClone: false,
 		scriptEval: false,
 		noCloneEvent: true,
-		boxModel: null
+		boxModel: null,
+		reliableHiddenOffsets: true
 	};
 
+	// Make sure that the options inside disabled selects aren't marked as disabled
+	// (WebKit marks them as diabled)
+	select.disabled = true;
+	jQuery.support.optDisabled = !opt.disabled;
+
 	script.type = "text/javascript";
 	try {
 		script.appendChild( document.createTextNode( "window." + id + "=1;" ) );
@@ -107,6 +118,18 @@
 
 		document.body.appendChild( div );
 		jQuery.boxModel = jQuery.support.boxModel = div.offsetWidth === 2;
+
+		// Check if table cells still have offsetWidth/Height when they are set
+		// to display:none and there are still other visible table cells in a
+		// table row; if so, offsetWidth/Height are not reliable for use when
+		// determining if an element has been hidden directly using
+		// display:none (it is still safe to use offsets if a parent element is
+		// hidden; don safety goggles and see bug #4512 for more information).
+		// (only IE 8 fails this test)
+		div.innerHTML = '<table><tr><td style="display:none"></td><td>t</td></tr></table>';
+		jQuery.support.reliableHiddenOffsets = div.getElementsByTagName('td')[0].offsetHeight === 0;
+		div.innerHTML = '';
+
 		document.body.removeChild( div ).style.display = 'none';
 		div = null;
 	});
@@ -146,3 +169,5 @@ jQuery.props = {
 	usemap: "useMap",
 	frameborder: "frameBorder"
 };
+
+})( jQuery );