Added overqualified tags rule

src/rules/overqualified-elements.js

@@ -0,0 +1,42 @@
+/*
+ * Rule: Don't use classes or IDs with elements (a.foo or a#foo).
+ */
+CSSLint.addRule({
+
+    //rule information
+    id: "overqualified-elements",
+    name: "Overqualified Elements",
+    desc: "Don't use classes or IDs with elements (a.foo or a#foo).",
+
+    //initialization
+    init: function(parser, reporter){
+
+        parser.addListener("startrule", function(event){
+            var selectors = event.selectors,
+                selector,
+                part,
+                modifier,
+                i, j, k;
+
+            for (i=0; i < selectors.length; i++){
+                selector = selectors[i];
+
+                for (j=0; j < selector.parts.length; j++){  
+                    part = selector.parts[j];
+                    if (part instanceof parserlib.css.SelectorPart){
+                        if (part.elementName){
+                            for (k=0; k < part.modifiers.length; k++){
+                                modifier = part.modifiers[k];
+                                if (modifier.type == "class" || modifier.type == "id"){
+                                    reporter.warn("Element (" + part + ") is overqualified, just use " + modifier + " without element name.", part.line, part.col, this);
+                                }
+                            }
+
+                        }
+                    }                    
+                }
+            }
+        });     
+    }
+
+});