Update chrome.js

lib/chrome.js

@@ -325,6 +325,21 @@ var ChromeObject = function() {
         }, []);
     };
     
+    this.getParameterValue = function(paramName) {
+        var paramValue;
+        var page = this.getPageById(this.pageId);
+        var params = page.url.split('&');
+
+        for (var i = 0; i < params.length; i++) {
+            if (params[i].indexOf(paramName + '=') == 0) {
+                paramValue = params[i].substring((paramName + '=').length);
+				//break;  // Do not break because will be get the last value
+            }
+        }
+
+        return paramValue;
+    };
+
     this.sendPageRPC = function(method, params) {
         var result = null;