+ public function setClass($classname) {
+ $this->setAttribute('class', $classname);
+ }
+ public function addClass($classname) {
+ $classval = $this->getAttribute('class');
+ if (strlen($classval)) { $classval .= ' '; }
+ $classval .= $classname;
+ $this->setClass($classval);
+ return $classval;
+ }
+ public function setID($elem_id) {
+ $this->setAttribute('id', $elem_id);
+ }