Made sure that css('width') and height returned string values, not numerical values. Fixes #5627.

src/css.js

@@ -18,8 +18,8 @@ var rexclude = /z-?index|font-?weight|opacity|zoom|line-?height/i,
 
 jQuery.fn.css = function( name, value ) {
 	return access( this, name, value, true, function( elem, name, value ) {
-		if (value === undefined) {
-			return jQuery.css( elem, name );
+		if ( value === undefined ) {
+			return jQuery.curCSS( elem, name );
 		}
 		
 		if ( typeof value === "number" && !rexclude.test(name) ) {

test/unit/css.js

 module("css");
 
 test("css(String|Hash)", function() {
-	expect(27);
+	expect(28);
 
 	equals( jQuery('#main').css("display"), 'none', 'Check for css property "display"');
 
@@ -56,6 +56,8 @@ test("css(String|Hash)", function() {
 	}
 
 	equals( prctval, checkval, "Verify fontSize % set." );
+
+	equals( typeof child.css("width"), "string", "Make sure that a string width is returned from css('width')." );
 });
 
 test("css(String, Object)", function() {