function nav1()
{
	var w = document.sets1.select1.selectedIndex;
	var url_add = document.sets1.select1.options[w].value;
	window.location.href = url_add;
}
function nav2()
{
	var w = document.sets2.select2.selectedIndex;
	var url_add = document.sets2.select2.options[w].value;
	window.location.href = url_add;
}
function changesize()
{
	var w = document.ordersize.size.selectedIndex;
	var url_add = document.ordersize.size.options[w].value;
	document.ordersize.submit();
}