var sizes_framed = new Array();
var sizes_unframed = new Array();
var design = new Array();

function show_sizes()
{
	var dropdown1 = document.getElementById("media");
	if(dropdown1)
	{
		var selected = dropdown1.selectedIndex;
		var selected_value = dropdown1[selected].value;
		var dropdown2;
		var i = 0;
		while(i <= 5)
		{
			dropdown2 = document.getElementById("sizes_"+i)
			{
				if(dropdown2)
				{
					if(i == selected_value)
					{
						dropdown2.style.display="inline";
						dropdown2.style.height="auto";
						dropdown2.style.width="auto";
					}
					else
					{
						dropdown2.style.display="none";
						dropdown2.style.height="0px";
						dropdown2.style.width="0px";
					}
				}
			}
			dropdown2 = document.getElementById("framing_"+i)
			{
				if(dropdown2)
				{
					if(i == selected_value)
					{
						//dropdown2.style.display="inline";
						//dropdown2.style.height="auto";
						//dropdown2.style.width="auto";
					}
					else
					{
						//dropdown2.style.display="none";
						//dropdown2.style.height="0px";
						//dropdown2.style.width="0px";
					}
				}
			}
			i++;
		}
	}
}

function update_price()
{
	var price_div = document.getElementById('price');
	var price_hidden = document.getElementById('price_hidden');
	var dropdown1 = document.getElementById('media');
	var dropdown4 = document.getElementById('design');
	var checkbox1 = document.getElementById('laquer');
	if(dropdown1 && dropdown4)
	{
		var selected1 = dropdown1.selectedIndex;
		var selected_value1 = dropdown1[selected1].value;
		var selected4 = dropdown4.selectedIndex;
		var selected_value4 = dropdown4[selected4].value;
		var dropdown2 = document.getElementById('framing_'+selected_value1);
		var dropdown3 = document.getElementById('sizes_'+selected_value1);
		if(dropdown2 && dropdown3)
		{
			var selected2 = dropdown2.selectedIndex;
			if(dropdown2.value)
			{
				var selected_value2 = dropdown2.value;	
				var selected3 = dropdown3.selectedIndex;
				var selected_value3 = dropdown3[selected3].value;
				if(selected_value1 && selected_value2 && selected_value3 && selected_value4)
				{
					if(selected_value2 == 2)
					{
						var price = sizes_framed[selected_value3];
					}
					else
					{
						var price = sizes_unframed[selected_value3];
					}   
					price = price + design[selected_value4];
					if(checkbox1)
					{
						if(checkbox1.checked)
						{
							price = price + 5;
						}
					}
					var price_2 = price * 1.175;
					if(price.toFixed(2) != "NaN")
					{
						if(price_div)
						{
							price_div.innerHTML = "£"+price.toFixed(2)+" plus &pound9.00 postage within the UK";
						}
						if(price_hidden)
						{
							price_hidden.value = "£"+price.toFixed(2);
						}
					}
					else
					{
						if(price_div)
						{
							price_div.innerHTML = "";
						}
						if(price_hidden)
						{
							price_hidden.value = "";
						}
					}
				}
			}
			else
			{
				if(price_div)
				{
					price_div.innerHTML = "";
				}
				if(price_hidden)
				{
					price_hidden.value = "";
				}
			}
		}
		else
		{
			if(price_div)
			{
				price_div.innerHTML = "";
			}
			if(price_hidden)
			{
				price_hidden.value = "";
			}
		}
	}
	else
	{
		if(price_div)
		{
			price_div.innerHTML = "";
		}
		if(price_hidden)
		{
			price_hidden.value = "";
		}
	}
}