function Popup_Menu(a){this._event_handler=a;this._y_pos=0}Popup_Menu.prototype.show=function(b,a){this.clear();remove_sub_menu();var d=document.getElementById("appl_body");var c=document.createElement("div");d.appendChild(c);c.id="popup";c.style.left=b+"px";c.style.top=a+"px";this.configure_items()};Popup_Menu.prototype.add_item=function(a,c,b,e){var d=document.createElement("p");d.className="popup_item";d.style.top=this._y_pos+"em";d.style.height=a+"em";d.appendChild(document.createTextNode(c));document.getElementById("popup").appendChild(d);if(e!=null){d.onclick=e}d.onmouseover=function(){this.className="popup_item_over";if(b!=null){b.call()}else{remove_sub_menu()}};d.onmouseout=function(){this.className="popup_item"};this._y_pos+=a};Popup_Menu.prototype.configure_items=function(){};Popup_Menu.prototype.clear=function(){var a=document.getElementById("popup");if(a!=null){var b=document.getElementById("appl_body");clear_node(a);b.removeChild(a)}};function remove_sub_menu(){try{var a=document.getElementById("sub_menu");if(a){var b=document.getElementById("appl_body");clear_node(a);b.removeChild(a)}}catch(c){alert("Popup_Menu.remove_sub_menu(): "+c);return false}};