Drag and Drop

Пытаюсь реализовать на PHP подобный код:

//start coordinates
int startX = new Integer(selenium.getEval("this.getElementPositionLeft('id=sourceObject')"));
int startY = new Integer(selenium.getEval("this.getElementPositionTop('id=sourceObject')"));
 
//destination coordinates
int destinationX = new Integer(selenium.getEval("this.getElementPositionLeft('id=destinationObject')"));
int destinationY = new Integer(selenium.getEval("this.getElementPositionTop('id=destinationObject')"));
 
//destination dimensions
int destinationWidth = new Integer(selenium.getEval("this.getElementWidth('id=destinationObject')"));
int destinationHeight = new Integer(selenium.getEval("this.getElementHeight('id=destinationObject')"));
 
//scroll to destination
int destinationOffsetTop = new Integer(selenium.getEval("this.browserbot.findElement('id=destinationObjectContainer').offsetTop"));
selenium.getEval("this.browserbot.findElement('id=destinationObjectContainer').scrollTop = " + destinationOffsetTop);
 
//work out destination coordinates
destinationY = destinationY - destinationOffsetTop;
int endX = Math.round(destinationX + (destinationWidth / 2));
int endY = Math.round(destinationY + (destinationHeight / 2));
int deltaX = endX - startX;
int deltaY = endY - startY;
String movementsString = "" + deltaX + "," + deltaY;
 
selenium.dragAndDrop("id=sourceObject", movementsString);

Для осуществления Drag and Drop commands in the Web
Мой Selenium RC как-то совсем не хочет воспринимать...
Заранее спасибо за любые подсказки...