function validForm(passform)
	{
	
		if(passform.txtfirstname.value=='') 
			{
			alert('You forgot to enter your first name. Please try again')
			passform.txtfirstname.focus()
			return false
			}

		if(passform.txtsurname.value=='')
			{
			alert('You forgot to enter your surname. Please try again')
			passform.txtsurname.focus()
			return false
			}
		
		if(passform.txtemail.value=='')
			{
			alert('You forgot to enter your email address. Please try again')
			passform.txtemail.focus()
			return false
			}
		
		if(passform.dates.value=='')
			{
			alert('Please select a cruise date')
			passform.dates.focus()
			return false
			}

		if(passform.children.value=='')
			{
			alert('Please indicate how many children')
			passform.children.focus()
			return false
			}

		if(passform.adults.value=='')
			{
			alert('Please indicate how many adults')
			passform.adults.focus()
			return false
			}



		}