function fillCategory(){ 
 // this function is used to fill the category list on load
addOption(document.drop_list.Category, "1", "Primary", "");
addOption(document.drop_list.Category, "2", "Secondary", "");
addOption(document.drop_list.Category, "Scripts", "Scripts", "");
}

function SelectSubCat(){
// ON selection of category this function will work

removeAllOptions(document.s.sublevel_id);
addOption(document.s.sublevel_id, "", "- Choose a class -", "");

if(document.s.level_id.value == '1'){
addOption(document.s.sublevel_id,"1", "Junior Infants");
addOption(document.s.sublevel_id,"2", "Senior Infants");
addOption(document.s.sublevel_id,"3", "1st Class");
addOption(document.s.sublevel_id,"4", "2nd Class");
addOption(document.s.sublevel_id,"5", "3rd Class");
addOption(document.s.sublevel_id,"6", "4th Class");
addOption(document.s.sublevel_id,"7", "5th Class");
addOption(document.s.sublevel_id,"8", "6th Class");
addOption(document.s.sublevel_id,"14", "Learning Support");
}
if(document.s.level_id.value == '2'){
addOption(document.s.sublevel_id,"9", "1st Year");
addOption(document.s.sublevel_id,"10", "2nd Year");
addOption(document.s.sublevel_id,"11", "Junior Cert", "");
addOption(document.s.sublevel_id,"12", "Transition Year", "");
addOption(document.s.sublevel_id,"13", "Leaving Cert", "");
addOption(document.s.sublevel_id,"15", "Learning Support", "");
}


}
////////////////// 

function removeAllOptions(selectbox)
{
	var i;
	for(i=selectbox.options.length-1;i>=0;i--)
	{
		//selectbox.options.remove(i);
		selectbox.remove(i);
	}
}


function addOption(selectbox, value, text )
{
	var optn = document.createElement("OPTION");
	optn.text = text;
	optn.value = value;

	selectbox.options.add(optn);
}