function change_pic(src)
{
	act_pic = document.getElementById("pic1").src;
	new_pic = document.getElementById(src).src;
	document.getElementById("pic1").src=new_pic;
	document.getElementById(src).src=act_pic;			
}
function submit_page()
{
	document.getElementById("confirm").value="confirm";
	document.wk.submit();
}
function delete_product(delete_id,delete_package)
{
	document.getElementById("delete_id").value=delete_id;
	document.getElementById("delete_package").value=delete_package;
	document.wk.submit();
}
function go_to(url)
{
	self.location.href=url;
}