function setSizeX($sizeX)
    {
        $oldX = $this->sizeX;
        $this->sizeX = $sizeX;
        $this->onResize($oldX, $this->sizeY);
    }
function setSizeX($sizeX)
    {
        $oldX = $this->sizeX;
        $this->sizeX = $sizeX;
        $this->onResize($oldX, $this->sizeY);
    }
function setSizeX ( $ sizeX ) { $ oldX = $ this -> sizeX ; $ this -> sizeX = $ sizeX ; $ this -> onResize ( $ oldX , $ this -> sizeY ) ; }
Sets the width of the element
@param float
Sets the width of the element