function add(pg)
{
	var p = document.getElementById("pg" + pg + "_product").value;

	if ( p == "-1" )
	{
		alert("Please select a size.");
		return;
	}

	var q = document.getElementById("pg" + pg + "_quantity").value;
	document.location = "/cart.php?method=add&p=" + p + "&q=" + q;
}

function changeProduct(pg)
{
	var p = document.getElementById("pg" + pg + "_product").value;

	var idx;
	if ( p == -1 )
		idx = "pg" + pg;
	else
		idx = "p" + p;
	
	var price = prices[idx];
	var count = counts[idx];

	document.getElementById("pg" + pg + "_price").innerHTML = price;
	document.getElementById("pg" + pg + "_count").innerHTML = count;

}