//bool putJavaScriptCodeViewerOnTheLeft,
		public ascx_Javascript_AST buildGui( bool addUrlLoadTextBox)
		{
			var mainGui = this.add_1x1("Files or ScriptBlocks","Javascript Source (you can edit this code and see the results in realtime)");
			var splitContainer = this.controls<SplitContainer>();
			if (addUrlLoadTextBox)			
			{
				showJavascriptsFromUrl = 
				splitContainer.insert_Above<Panel>(25)
							  .add_LabelAndComboBoxAndButton("Enter Url to load Javascripts","","Open",  loadJavascriptsFromUrl)
							  .controls<ComboBox>();								  
			}
			/*if (putJavaScriptCodeViewerOnTheLeft)
			{				
				splitContainer.splitterDistance(this.width()/3);
				javascriptCode = mainGui[1].add_TreeView().showSelection().sort();
				sourceCode = mainGui[0].add_SourceCodeViewer(); 				
			}
			else			
			{*/
				javascriptCode = mainGui[0].add_TreeView().showSelection().sort();
				sourceCode = mainGui[1].add_SourceCodeViewer(); 
			//}
			pagesVisited = javascriptCode.insert_Above<ComboBox>(25).dropDownList();
			
			codeSnippet = sourceCode.insert_Below<TextBox>(100).multiLine().scrollBars(); 
			tabControl  = javascriptCode.insert_Below<TabControl>();
			
			jsAST = tabControl.add_Tab("Javascript - View Ast Tree")
								  .add_TreeView()
								  .showSelection();
								  
			jsFunctions = tabControl.add_Tab("JScript: Functions")
								  		.add_TreeView()
								  		.showSelection()
								  		.sort();
			
			jsIdentifiers = tabControl.add_Tab("JScript: Identifiers")
								  		  .add_TreeView()
								  		  .showSelection()
								  		  .sort();

			jsValues = tabControl.add_Tab("JScript: Values")
								  	 .add_TreeView()
								  	 .showSelection()
								  	 .sort();
								  		
			
			allAST = tabControl.add_Tab("Javascript - View Ast Elements")					    
								   .add_TreeView()
								   .showSelection()
								   .sort();
			
			var searchTab = tabControl.add_Tab("Search in Code")
									  .add_LabelAndComboBoxAndButton("search for (case sensitive)","","show",
									  	(text)=> {
									  				sourceCode.editor().invoke("searchForTextInTextEditor_findNext", text);
									  			 });
									  					  
			//tabControl.select_Tab(searchTab);
			javaScriptLoadMessage = javascriptCode.insert_Below<Panel>(20);
													  
			allAST.insert_Below<Panel>(25)
				  .add_CheckBox("Render this view (some performace impact on large scripts)", 0,0, 
				  		(value)=>{
				  					RenderViewAstElementsTreeView = value;
				  					processJavascript();
				  				 })
				  .autoSize(); 
				  
				  
			allAST.jint_configure_showSelectionDetails(sourceCode, codeSnippet); 
			jsFunctions.jint_configure_showSelectionDetails(sourceCode, codeSnippet); 
			jsIdentifiers.jint_configure_showSelectionDetails(sourceCode, codeSnippet); 
			jsValues.jint_configure_showSelectionDetails(sourceCode, codeSnippet); 

			javascriptCode.afterSelect<string>(
				(jsCode) => {
								sourceCode.editor().clearBookmarksAndMarkers();
								sourceCode.set_Text(jsCode,"*.js");
								sourceCode.editor().refresh(); 
							});
			
			sourceCode.onTextChanged(processJavascript);
			
			pagesVisited.onSelection<IE_HtmlPage>(
				(htmlPage)=>{
								var allScriptsCompiledOk = javascriptCode.populateWithHtmlPageScripts(htmlPage);
								javascriptCode.add_Node("zzz [Original Html Code for: {0}]".format(htmlPage.PageUri.str()),htmlPage.PageSource);
								handleCompilationResult(allScriptsCompiledOk);								
							});
							
			pagesVisited.onSelection<Jint_Wrapper>(
				(jintWrapper)=>{									
									var allScriptsCompiledOk = javascriptCode.populateWithHtmlPageScripts(jintWrapper.JavaScripts);
									javascriptCode.add_Node("zzz_[Original Code for: {0}]".format(jintWrapper.Uri.str()),jintWrapper.Html);
									handleCompilationResult(allScriptsCompiledOk);
							   });
			
			javascriptCode.onDrop(
				(fileOrFolder)=>{
									if (fileOrFolder.fileExists()) 
										javascriptCode.add_Node(fileOrFolder.str(), fileOrFolder.fileContents());
									else if (fileOrFolder.dirExists()) 
									{
										javascriptCode.clear();
										foreach(var file in fileOrFolder.files("*.js",true))
											javascriptCode.add_Node(file.str(), file.fileContents()); 
									}
								});


			this.add_ContextMenu().add_MenuItem("Show log viewer",()=> this.insert_Below<Panel>(90).add_LogViewer());
			
			return this;

		}