function clickButton(e, buttonid)
		{ 
			var evt = e ? e : window.event;
			var bt = document.getElementById(buttonid);
			if (bt)
			{
				if (evt.keyCode == 13)
				{ 

					bt.click(); 
 
					return false; 

				} 
				else
					positionChange(e);

			} 

		}
		function toggleLayer(whichLayer,m)
		{
             if (document.getElementById)
             {
                  // this is the way the standards work
                  var style2 = document.getElementById(whichLayer).style;
                  style2.display = style2.display? "":"block";
                  document.getElementById(m).innerHTML = style2.display?"Hide Instruction":"Show Instruction";
             }
             else if (document.all)
             {
                  // this is the way old msie versions work
                  var style2 = document.all[whichLayer].style;
                  style2.display = style2.display? "":"block";
                  document.all[m].innerHTML = style2.display?"Hide Instruction":"Show Instruction";
             }
             else if (document.layers)
             {
                  // this is the way nn4 works
                  var style2 = document.layers[whichLayer].style;
                  style2.display = style2.display? "":"block";
                  document.layers[m].innerHTML = style2.display?"Hide Instruction":"Show Instruction";
             }
        }