protected void si_S1I3ImagePicked(object sender, EventArgs e)
{
OSAEImageManager imgMgr = new OSAEImageManager();
State1Img3 = imgMgr.GetImage((int)sender);
imgState1Img3.Source = LoadImage(State1Img3.Data);
imgState1Img3.ToolTip = "Width:" + imgState1Img3.Width + " Height:" + imgState1Img3.Height;
Validate_Initial_Coordinates();
btnLoadS1I4.IsEnabled = true;
imgState1Img4.IsEnabled = true;
}