function trim(str)
{
	return str.replace(/^\s*|\s*$/g,"");
}
function Validation()
{
	if(trim(document.payment.name.value)=="")
	{
		alert("Please enter your name.");
		document.payment.name.focus();
		return false;
	}
	if(trim(document.payment.gmc_number.value)=="")
	{
		alert("Please enter gmc number.");
		document.payment.gmc_number.focus();
		return false;
	}
	if(trim(document.payment.dob.value)=="")
	{
		alert("Please enter date of birth.");
		document.payment.dob.focus();
		return false;
	}
	if(trim(document.payment.telephone.value)=="")
	{
		alert("Please enter telephone number.");
		document.payment.telephone.focus();
		return false;
	}
	flag=0;
	len = document.payment.service.length;
	for (i = 0; i <len; i++) {
		if(document.payment.service[i].checked)
		{
				flag=1;
		}
	}
	if(flag==0)
	{
		alert("Please select a service.");
		return false;
	}
}