function switchCell(m)
  {
  var style, divstyle;
  document.getElementById("navcell1").className = "tab-off";
  document.getElementById("navcell2").className = "tab-off";
  document.getElementById("divnavcell1").className = "tab-std";
  document.getElementById("divnavcell2").className = "tab-std";

  document.getElementById("tb1").className = "hide-table";
  document.getElementById("tb2").className = "hide-table";
  if(m == 2)
    {
    style = "tab-onr";
	divstyle = "div-onr";
    }
  else
    {
    style = "tab-on";
    divstyle = "div-on";
    }
  document.getElementById("navcell" + m).className = style;
  document.getElementById("divnavcell" + m).className = divstyle;
  document.getElementById("tb" + m).className = "tab-content show-table";
  }