function fillCategory(){ 
 // this function is used to fill the category list on load
addOption(document.drop_list.Category, "Caribbean", "Caribbean", "");
addOption(document.drop_list.Category, "Atlantic", "Atlantic", "");
addOption(document.drop_list.Category, "Pacific - Hawaii", "Pacific - Hawaii", "");
}

function SelectSubCat(){
// ON selection of category this function will work
removeAllOptions(document.drop_list.SubCat);
addOption(document.drop_list.SubCat, "-- Select the Island Group --", "-- Select the Island Group --", "");

if(document.drop_list.Category.value == 'Caribbean'){
addOption(document.drop_list.SubCat,"Antigua and Barbuda", "Antigua and Barbuda");
addOption(document.drop_list.SubCat,"Aruba", "Aruba");
addOption(document.drop_list.SubCat,"Barbados", "Barbados");
addOption(document.drop_list.SubCat,"British Virgin Islands", "British Virgin Islands");
addOption(document.drop_list.SubCat,"British West Indies", "British West Indies");
addOption(document.drop_list.SubCat,"Dominica", "Dominica");
addOption(document.drop_list.SubCat,"French West Indies", "French West Indies");
addOption(document.drop_list.SubCat,"Grendad", "Grendad");
addOption(document.drop_list.SubCat,"Guyana", "Guyana");
addOption(document.drop_list.SubCat,"Hispaniola", "Hispaniola");
addOption(document.drop_list.SubCat,"Jamaica", "Jamaica");
addOption(document.drop_list.SubCat,"Netherlands Antilles", "Netherlands Antilles");
addOption(document.drop_list.SubCat,"Commonwealth of Puerto Rico", "Puerto Rico, Commonwealth of");
addOption(document.drop_list.SubCat,"St. Kitts and Nevis", "St. Kitts and Nevis");
addOption(document.drop_list.SubCat,"St. Lucia", "St. Lucia");
addOption(document.drop_list.SubCat,"St. Vincent and The Grenadines", "St. Vincent and The Grenadines");
addOption(document.drop_list.SubCat,"Suriname", "Suriname");
addOption(document.drop_list.SubCat,"Trinidad and Tobago", "Trinidad and Tobago");
addOption(document.drop_list.SubCat,"United States of America", "United States of America");
addOption(document.drop_list.SubCat,"United States Virgin Islands", "United States Virgin Islands");
addOption(document.drop_list.SubCat,"Venezuela", "Venezuela");
}

if(document.drop_list.Category.value == 'Atlantic'){
addOption(document.drop_list.SubCat,"Bahamas", "Bahamas");
addOption(document.drop_list.SubCat,"Turks And Caicos", "Turks And Caicos");
}

if(document.drop_list.Category.value == 'Pacific - Hawaii'){
addOption(document.drop_list.SubCat,"Hawaii", "Hawaii");
//addOption(document.drop_list.SubCat,"Kauai", "Kauai");
//addOption(document.drop_list.SubCat,"Lanai", "Lanai");
//addOption(document.drop_list.SubCat,"Maui", "Maui");
//addOption(document.drop_list.SubCat,"Molokai", "Molokai");
//addOption(document.drop_list.SubCat,"Oahu", "Oahu");

}

}

////////////////// 

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);
}