What is the equivalent of getBoundingClientRect on iPhone Mobile Safari 3?

For anyone looking for the ele.getBoundingClientRect().width method on iOS 3, you can use ele.offsetWidth

 if("getBoundingClientRect" in this.container) {
    this.width = this.container.getBoundingClientRect().width ;    
}else {
    this.width = this.container.offsetWidth;    //http://help.dottoro.com/ljvmcrrn.php
}