function fillCategory(){ 
 // this function is used to fill the category list on load
addOption(document.drop_list.Event, "TT", "Time Trial", "");
addOption(document.drop_list.Event, "Criterium", "Criterium", "");
addOption(document.drop_list.Event, "RR", "Road Race", "");
addOption(document.drop_list.Event, "GC", "General Classification", "");
}

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

removeAllOptions(document.drop_list.Category);
addOption(document.drop_list.Category, "", "Category", "");

if(document.drop_list.Event.value == 'TT'){
addOption(document.drop_list.Category,"Pro12", "Pro 1/2");
addOption(document.drop_list.Category,"Women123", "Women 123");
addOption(document.drop_list.Category,"Elite", "Elite");
addOption(document.drop_list.Category,"Women34", "Women 34");
addOption(document.drop_list.Category,"CompetitiveUnder", "Competitive Under 35");
addOption(document.drop_list.Category,"CompetitiveOver", "Competitive Over 35");
addOption(document.drop_list.Category,"Masters3040", "Masters 30+/40+");
}
if(document.drop_list.Event.value == 'Criterium'){
addOption(document.drop_list.Category,"Pro12", "Pro 1/2");
addOption(document.drop_list.Category,"Women123", "Women 123");
addOption(document.drop_list.Category,"Elite", "Elite");
addOption(document.drop_list.Category,"Women34", "Women 34");
addOption(document.drop_list.Category,"CompetitiveUnder", "Competitive Under 35");
addOption(document.drop_list.Category,"CompetitiveOver", "Competitive Over 35");
addOption(document.drop_list.Category,"Masters3040", "Masters 30+/40+");
}
if(document.drop_list.Event.value == 'RR'){
addOption(document.drop_list.Category,"Pro12", "Pro 1/2");
addOption(document.drop_list.Category,"Women123", "Women 123");
addOption(document.drop_list.Category,"Elite", "Elite");
addOption(document.drop_list.Category,"Women34", "Women 34");
addOption(document.drop_list.Category,"CompetitiveUnder", "Competitive Under 35");
addOption(document.drop_list.Category,"CompetitiveOver", "Competitive Over 35");
addOption(document.drop_list.Category,"Masters3040", "Masters 30+/40+");
}
if(document.drop_list.Event.value == 'GC'){
addOption(document.drop_list.Category,"Pro12", "Pro 1/2");
addOption(document.drop_list.Category,"Women123", "Women 123");
addOption(document.drop_list.Category,"Elite", "Elite");
addOption(document.drop_list.Category,"Women34", "Women 34");
addOption(document.drop_list.Category,"CompetitiveUnder", "Competitive Under 35");
addOption(document.drop_list.Category,"CompetitiveOver", "Competitive Over 35");
addOption(document.drop_list.Category,"Masters3040", "Masters 30+/40+");
}


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

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);
}