public ApitTreeUI() {
initComponents();
HTMLEditorKit hed = new HTMLEditorKit();
StyleSheet sheet = hed.getStyleSheet();
sheet.addRule(".php-boundry {font-weight:bold;}");
sheet.addRule(".php-function-or-constant {color:#0000AA; }");
sheet.addRule(".php-string {color:#AA0000; }");
sheet.addRule(".php-constant {color:#AA3333; }");
sheet.addRule(".php-variable {color:#333300; }");
sheet.addRule(".php-keyword {color:#006600; }");