//This function is used to read a cookie
function readCookie(name)
{
	var retVal
	var nameEQ = name + "=";
	var ca = document.cookie.split(';');
	for(var i=0;i < ca.length;i++)
	{
		var c = ca[i];
		while (c.charAt(0)==' ') c = c.substring(1,c.length);
		if (c.indexOf(nameEQ) == 0)
		{
			return('<input type=hidden name=zipcode value=' + c.substring(nameEQ.length,c.length) + '>');
		}
	}
	return('<input type=hidden name=zipcode value=>');
}