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);
	}

function Finish() {
	}

function showSubmit() {
	document.getElementById('addtocart').style.display = 'inline';
	}

function hideSubmit() {
	document.getElementById('addtocart').style.display = 'none';
	}

function fillHardwares() { 
	removeAllOptions(document.product_select.Hardwares);
	addOption(document.product_select.Hardwares, '', '-- Select Hardware --', '');
	addOption(document.product_select.Hardwares, 'F', 'Freshwater');
	addOption(document.product_select.Hardwares, 'S', 'Saltwater');
	ClearColors();
	}
	
function fillColors() { 
	fillHardwares();
	document.getElementById('Colors').style.display = 'inline';
	}
	
function fillSizes() { 
	fillColors();
	document.getElementById('Sizes').style.display = 'inline';
	}
	
function fillMaterials() { 
	fillSizes();
	document.getElementById('Materials').style.display = 'inline';
	}
	
function fillBodies() { 
	fillMaterials();
	document.getElementById('Bodies').style.display = 'inline';
	}
	
function fillOptions() { 
	fillBodies();
	document.getElementById('Options').style.display = 'inline';
	}
	
function ClearColors(){
	removeAllOptions(document.product_select.Colors);
	addOption(document.product_select.Colors, '', '-- Select Color --', '');
	document.getElementById('Colors').style.display = 'none';
	ClearSizes();
	}

function ClearSizes(){
	removeAllOptions(document.product_select.Sizes);
	addOption(document.product_select.Sizes, '', '-- Select Size --', '');
	document.getElementById('Sizes').style.display = 'none';
	ClearMaterials();
	}

function ClearMaterials(){
	removeAllOptions(document.product_select.Materials);
	addOption(document.product_select.Materials, '', '-- Select Material --', '');
	document.getElementById('Materials').style.display = 'none';
	ClearBodies();
	}

function ClearBodies(){
	removeAllOptions(document.product_select.Bodies);
	addOption(document.product_select.Bodies, '', '-- Select Body --', '');
	document.getElementById('Bodies').style.display = 'none';
	ClearOptions();
	}

function ClearOptions(){
	removeAllOptions(document.product_select.Options);
	addOption(document.product_select.Options, '', '-- Select Option --', '');
	document.getElementById('Options').style.display = 'none';
	document.getElementById('addtocart').style.display = 'none';
	}

fillHardwares();