function fillCategory()
{ 
addOption(document.drop_list.Category, "1", "Hotel/Residence", "");
addOption(document.drop_list.Category, "2", "Campeggi", "");
addOption(document.drop_list.Category, "3", "Bed and breakfast", "");
addOption(document.drop_list.Category, "4", "Agriturismo", "");
addOption(document.drop_list.Category, "5", "Case vacanza", "");
addOption(document.drop_list.Category, "6", "Appartamenti", "");
addOption(document.drop_list.Category, "7", "Ristoranti/Pizzerie", "");
addOption(document.drop_list.Category, "8", "Bar/Chioschi", "");
}

function SelectSubCat()
{
removeAllOptions(document.drop_list.SubCat);
addOption(document.drop_list.SubCat, "0", "Tutte", "");

if(document.drop_list.Category.value == '1')
{
addOption(document.drop_list.SubCat,"2", "2 stelle");	
addOption(document.drop_list.SubCat,"3", "3 stelle");
addOption(document.drop_list.SubCat,"4", "4 stelle");
addOption(document.drop_list.SubCat,"5", "5 stelle");	
}
if(document.drop_list.Category.value == '2')
{	
addOption(document.drop_list.SubCat,"3", "3 stelle");
addOption(document.drop_list.SubCat,"4", "4 stelle");	
}
}

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


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

	selectbox.options.add(optn);
}