if (document.getElementsByTagName)
{
	
	var prodSelect = document.getElementsByTagName("input");
	
	for (i = 0; i < prodSelect.length; i++)
	{
		if (prodSelect[i].className == "prodcheck")
		{
			prodSelect[i].onclick = addItem;
		}
	}
	
	var prodSelect = document.getElementsByTagName("input");
	
	for (i = 0; i < prodSelect.length; i++)
	{
		if (prodSelect[i].className == "itemamount")
		{
			prodSelect[i].onchange = calc;
		}
	}
}