Popup toolbar

I am making a Toolbar interface i created 4 buttons in it all i want is that when i click any of the button a window will popup. 4 button = 4 different popups

125**

private var selectedToolbar : int = 0;
    private var toolbarStrings = ["Tab One", "Tab Two", "Tab Three", "Tab Four"];
     function SelectedPopup(){
      if (SelectedPopup==-1) {
    	result = GUI.Toolbar((Rect (10, 0, Screen.width - 600, 20), selectedToolbar, toolbarStrings));
    	if (result != -1 (or whatever toolbar returns if nothing pressed))
    	SelectedPopup = result;
    	}
      if (SelectedPopup==1) {
      PopupGuiCode();
      }
      if (SelectedPopup==2) {
      PopupGuiCode();
      }
      if (SelectedPopup==3) {
      PopupGuiCode();
      }
      if (SelectedPopup==4) {
      PopupGuiCode();
      }
      if (GUI.Button (Rect (25, 25, 100, 30), "Button"))
    	}
    function OnGUI () {
    	selectedToolbar = GUI.Toolbar (Rect (10, 0, Screen.width - 600, 20), selectedToolbar, toolbarStrings);
    
    }

**125

Use GUI.Window.

The scripting reference has a much more detailed explanation than I could ever give on how to use it.