X-Git-Url: http://git.asbjorn.biz/?a=blobdiff_plain;f=src%2Fsupport.js;h=e4c3ea9164c6e8e41efa542499c351d97470670c;hb=c43b078c6911027fd4124d542446ad0098662f6a;hp=878db1f0ba401d1986b8dbbc0c705fafb66c50ac;hpb=0cdcef5b364fa3c89d7f27935e77b453f4a56efd;p=jquery.git

diff --git a/src/support.js b/src/support.js
index 878db1f..e4c3ea9 100644
--- a/src/support.js
+++ b/src/support.js
@@ -61,12 +61,14 @@
 		optSelected: opt.selected,
 
 		// Will be defined later
+		deleteExpando: true,
 		optDisabled: false,
 		checkClone: false,
 		scriptEval: false,
 		noCloneEvent: true,
 		boxModel: null,
 		inlineBlockNeedsLayout: false,
+		shrinkWrapBlocks: false,
 		reliableHiddenOffsets: true
 	};
 
@@ -90,6 +92,15 @@
 		delete window[ id ];
 	}
 
+	// Test to see if it's possible to delete an expando from an element
+	// Fails in Internet Explorer
+	try {
+		delete script.test;
+
+	} catch(e) {
+		jQuery.support.deleteExpando = false;
+	}
+
 	root.removeChild( script );
 
 	if ( div.attachEvent && div.fireEvent ) {
@@ -120,17 +131,25 @@
 		document.body.appendChild( div );
 		jQuery.boxModel = jQuery.support.boxModel = div.offsetWidth === 2;
 
-		// Check if natively block-level elements act like inline-block
-		// elements when setting their display to 'inline'
-		// (IE < 8 does this)
-		if ( 'zoom' in div.style ) {
-			div.style.display = 'inline';
-
-			// Layout is necessary to trigger this “feature”
+		if ( "zoom" in div.style ) {
+			// Check if natively block-level elements act like inline-block
+			// elements when setting their display to 'inline' and giving
+			// them layout
+			// (IE < 8 does this)
+			div.style.display = "inline";
 			div.style.zoom = 1;
 			jQuery.support.inlineBlockNeedsLayout = div.offsetWidth === 2;
+
+			// Check if elements with layout shrink-wrap their children
+			// (IE 6 does this)
+			div.style.display = "";
+			div.innerHTML = "<div style='width:4px;'></div>";
+			jQuery.support.shrinkWrapBlocks = div.offsetWidth !== 2;
 		}
 
+		div.innerHTML = "<table><tr><td style='padding:0;border:0;display:none'></td><td>t</td></tr></table>";
+		var tds = div.getElementsByTagName("td");
+
 		// 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
@@ -138,48 +157,40 @@
 		// 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 = '';
+		jQuery.support.reliableHiddenOffsets = tds[0].offsetHeight === 0;
 
-		document.body.removeChild( div ).style.display = 'none';
-		div = null;
+		tds[0].style.display = "";
+		tds[1].style.display = "none";
+
+		// Check if empty table cells still have offsetWidth/Height
+		// (IE < 8 fail this test)
+		jQuery.support.reliableHiddenOffsets = jQuery.support.reliableHiddenOffsets && tds[0].offsetHeight === 0;
+		div.innerHTML = "";
+
+		document.body.removeChild( div ).style.display = "none";
+		div = tds = null;
 	});
 
 	// Technique from Juriy Zaytsev
 	// http://thinkweb2.com/projects/prototype/detecting-event-support-without-browser-sniffing/
-	var eventSupported = function( eventName ) { 
-		var el = document.createElement("div"); 
-		eventName = "on" + eventName; 
-
-		var isSupported = (eventName in el); 
-		if ( !isSupported ) { 
-			el.setAttribute(eventName, "return;"); 
-			isSupported = typeof el[eventName] === "function"; 
-		} 
-		el = null; 
-
-		return isSupported; 
+	var eventSupported = function( eventName ) {
+		var el = document.createElement("div");
+		eventName = "on" + eventName;
+
+		var isSupported = (eventName in el);
+		if ( !isSupported ) {
+			el.setAttribute(eventName, "return;");
+			isSupported = typeof el[eventName] === "function";
+		}
+		el = null;
+
+		return isSupported;
 	};
-	
+
 	jQuery.support.submitBubbles = eventSupported("submit");
 	jQuery.support.changeBubbles = eventSupported("change");
 
 	// release memory in IE
 	root = script = div = all = a = null;
 })();
-
-jQuery.props = {
-	"for": "htmlFor",
-	"class": "className",
-	readonly: "readOnly",
-	maxlength: "maxLength",
-	cellspacing: "cellSpacing",
-	rowspan: "rowSpan",
-	colspan: "colSpan",
-	tabindex: "tabIndex",
-	usemap: "useMap",
-	frameborder: "frameBorder"
-};
-
 })( jQuery );