Fixes #10828, .attr("coords") returns undefined in IE7

Author: mikesherov

src/attributes.js

@@ -524,7 +524,8 @@ if ( !getSetAttribute ) {
 
 	fixSpecified = {
 		name: true,
-		id: true
+		id: true,
+		coords: true
 	};
 
 	// Use this for any attribute in IE6/7

test/unit/attributes.js

@@ -1176,3 +1176,16 @@ test("contents().hasClass() returns correct values", function() {
 	ok( $contents.hasClass("foo"), "Found 'foo' in $contents" );
 	ok( !$contents.hasClass("undefined"), "Did not find 'undefined' in $contents (correctly)" );
 });
+
+test("coords returns correct values in IE6/IE7, see #10828", function() {
+	expect(2);
+
+	var map = jQuery("<map />"),
+		area;
+
+	area = map.html("<area shape='rect' coords='0,0,0,0' href='#' alt='a' />").find("area");
+	equal( area.attr("coords"), "0,0,0,0", "did not retrieve coords correctly");
+
+	area = map.html("<area shape='rect' href='#' alt='a' /></map>").find("area");
+	equal( area.attr("coords"), undefined, "did not retrieve coords correctly");
+});