protected void Page_Load(object sender, EventArgs e)
        {
            if (!IsPostBack)
            {
                // set page variables
                String  strTitle   = "System Settings";
                Literal page_title = (Literal)Master.FindControl("page_title");
                page_title.Text = strTitle;
                Label body_title = (Label)Master.FindControl("body_title");
                body_title.Text = strTitle;

                // get data for gradient values
                lblOne.Value   = GradientValues.getValue1();
                lblTwo.Value   = GradientValues.getValue2();
                lblThree.Value = GradientValues.getValue3();

                String strAlgorithm = "Select Algorithm Options";
                image_algorithm.ImageUrl  = "/Content/Images/icons8-workflow-100.png";
                button_algorithm.Text     = strAlgorithm;
                title_algorithm.InnerText = strAlgorithm;

                String strTier = "Adjust Index Tiers";
                image_tier.ImageUrl = "/Content/Images/icons8-adjust-100.png";
                button_tier.Text    = strTier;

                String strColor = "Change Gradient Colors";
                image_color.ImageUrl = "/Content/Images/icons8-paint-palette-100.png";
                button_color.Text    = strColor;
            }
        }
 protected void btnSaveValues(object sender, EventArgs e)
 {
     GradientValues.setValue1(Convert.ToDouble(lblOne.Value));
     GradientValues.setValue2(Convert.ToDouble(lblTwo.Value));
     GradientValues.setValue3(Convert.ToDouble(lblThree.Value));
 }