Fix #7986. $.support.boxModel shan't be fooled by page-level CSS.

src/css.js

@@ -163,7 +163,7 @@ jQuery.extend({
 	}
 });
 
-// DEPRECATED, Use jQuery.css() instead
+// DEPRECATED in 1.3, Use jQuery.css() instead
 jQuery.curCSS = jQuery.css;
 
 if ( document.defaultView && document.defaultView.getComputedStyle ) {

src/dimensions.js

@@ -34,7 +34,7 @@ jQuery.each( { Height: "height", Width: "width" }, function( name, type ) {
 				// 3rd condition allows Nokia support, as it supports the docElem prop but not CSS1Compat
 				doc = elem.document;
 				docElemProp = doc.documentElement[ clientProp ];
-				return doc.compatMode === "CSS1Compat" && docElemProp ||
+				return jQuery.support.boxModel && docElemProp ||
 					doc.body && doc.body[ clientProp ] || docElemProp;
 			}
 

src/effects.js

@@ -676,7 +676,7 @@ function defaultDisplay( nodeName ) {
 			// document to it; WebKit & Firefox won't allow reusing the iframe document.
 			if ( !iframeDoc || !iframe.createElement ) {
 				iframeDoc = ( iframe.contentWindow || iframe.contentDocument ).document;
-				iframeDoc.write( ( document.compatMode === "CSS1Compat" ? "<!doctype html>" : "" ) + "<html><body>" );
+				iframeDoc.write( ( jQuery.support.boxModel ? "<!doctype html>" : "" ) + "<html><body>" );
 				iframeDoc.close();
 			}
 

src/support.js

@@ -94,6 +94,9 @@ jQuery.support = (function() {
 		pixelMargin: true
 	};
 
+	//jQuery.boxModel DEPRECATED in 1.3, use jQuery.support.boxModel instead
+	jQuery.boxModel = support.boxModel = document.compatMode === "CSS1Compat";
+
 	// Make sure checked status is properly cloned
 	input.checked = true;
 	support.noCloneChecked = input.cloneNode( true ).checked;
@@ -172,7 +175,8 @@ jQuery.support = (function() {
 	// Run tests that need a body at doc ready
 	jQuery(function() {
 		var container, outer, inner, table, td, offsetSupport,
-			marginDiv, conMarginTop, ptlm, vb, style, html,
+			marginDiv, conMarginTop, style, html, positionTopLeftWidthHeight,
+			paddingMarginBorderVisibility, paddingMarginBorder,
 			body = document.getElementsByTagName("body")[0];
 
 		if ( !body ) {
@@ -181,15 +185,16 @@ jQuery.support = (function() {
 		}
 
 		conMarginTop = 1;
-		ptlm = "position:absolute;top:0;left:0;width:1px;height:1px;margin:0;";
-		vb = "visibility:hidden;border:0;";
-		style = "style='" + ptlm + "border:5px solid #000;padding:0;'";
-		html = "<div " + style + "><div></div></div>" +
-			"<table " + style + " cellpadding='0' cellspacing='0'>" +
+		paddingMarginBorder = "padding:0;margin:0;border:";
+		positionTopLeftWidthHeight = "position:absolute;top:0;left:0;width:1px;height:1px;";
+		paddingMarginBorderVisibility = paddingMarginBorder + "0;visibility:hidden;";
+		style = "style='" + positionTopLeftWidthHeight + paddingMarginBorder + "5px solid #000;";
+		html = "<div " + style + "display:block;'><div style='" + paddingMarginBorder + "0;display:block;overflow:hidden;'></div></div>" +
+			"<table " + style + "' cellpadding='0' cellspacing='0'>" +
 			"<tr><td></td></tr></table>";
 
 		container = document.createElement("div");
-		container.style.cssText = vb + "width:0;height:0;position:static;top:0;margin-top:" + conMarginTop + "px";
+		container.style.cssText = paddingMarginBorderVisibility + "width:0;height:0;position:static;top:0;margin-top:" + conMarginTop + "px";
 		body.insertBefore( container, body.firstChild );
 
 		// Construct the test element
@@ -203,8 +208,7 @@ jQuery.support = (function() {
 		// 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='padding:0;border:0;display:none'></td><td>t</td></tr></table>";
-
+		div.innerHTML = "<table><tr><td style='" + paddingMarginBorder + "0;display:none'></td><td>t</td></tr></table>";
 		tds = div.getElementsByTagName( "td" );
 		isSupported = ( tds[ 0 ].offsetHeight === 0 );
 
@@ -241,18 +245,23 @@ jQuery.support = (function() {
 			// elements when setting their display to 'inline' and giving
 			// them layout
 			// (IE < 8 does this)
+			div.innerHTML = "";
+			div.style.width = div.style.padding = "1px";
+			div.style.border = 0;
+			div.style.overflow = "hidden";
 			div.style.display = "inline";
 			div.style.zoom = 1;
-			support.inlineBlockNeedsLayout = ( div.offsetWidth === 2 );
+			support.inlineBlockNeedsLayout = ( div.offsetWidth === 3 );
 
 			// Check if elements with layout shrink-wrap their children
 			// (IE 6 does this)
-			div.style.display = "";
-			div.innerHTML = "<div style='width:4px;'></div>";
-			support.shrinkWrapBlocks = ( div.offsetWidth !== 2 );
+			div.style.display = "block";
+			div.style.overflow = "visible";
+			div.innerHTML = "<div style='width:5px;'></div>";
+			support.shrinkWrapBlocks = ( div.offsetWidth !== 3 );
 		}
 
-		div.style.cssText = ptlm + vb;
+		div.style.cssText = positionTopLeftWidthHeight + paddingMarginBorderVisibility;
 		div.innerHTML = html;
 
 		outer = div.firstChild;

test/data/support/bodyBackground.html

@@ -6,6 +6,13 @@
 		body {
 			background: #000000;
 		}
+
+		div {
+			padding: 15px;
+			border: 1px solid #999;
+			display: inline;
+			margin:8px;
+		}
 	</style>
 </head>
 <body>