function ChangeCat1_(land, city){
  //alert("test "+land);
  var argv = document.dataSelection.CatID1.options[document.dataSelection.CatID1.selectedIndex].value;
  var count = 1;

	document.dataSelection.CatID2.length=0;
	document.dataSelection.CatID2.options[0] = new Option(land,'0');
	for(var j=0; j < co.length; j++)
	{
		if(co[j][0] == argv)
		{
		  document.dataSelection.CatID2.options[count] = new Option(co[j][1],co[j][2]);
		  if (co[j][2] == '{azCatID2}')
		   selectCat2 = count;
		  count++;
		}
	}
	ChangeCat2_(city);
}
function ChangeCat2_(city){
	
  var argv = document.dataSelection.CatID2.options[document.dataSelection.CatID2.selectedIndex].value;
  var count = 1;
  
	document.dataSelection.CatID3.length=0;
	document.dataSelection.CatID3.options[0] = new Option(city,'0');
	for(j=0; j < sco.length; j++)
	{
		if(sco[j][0] == argv)
		{
		  document.dataSelection.CatID3.options[count] = new Option(sco[j][1],sco[j][2]);
		  if (sco[j][2] == '{azCatID3}')
		   selectCat3 = count;
		  count++;
		}
	}
}

function ChangeTimeCat2_(){
document.dataSelection.CatID2
	
  var argv = document.dataSelection.CatID2.options[document.dataSelection.CatID2.selectedIndex].value;
  var count = 1;
  
	document.dataSelection.CatID3.length=0;
	document.dataSelection.CatID3.options[0] = new Option('------','0');
	for(j=0; j < sco.length; j++)
	{
		if(sco[j][0] == argv)
		{
		  document.dataSelection.CatID3.options[count] = new Option(sco[j][1],sco[j][2]);
		  if (sco[j][2] == '{azCatID3}')
		   selectCat3 = count;
		  count++;
		}
	}
}