function doValidate()
{
	var thisFormObj = document.frmClayShoot ;
	var errorMsg    = "The following error(s) have occured:-\n" ;
	var hasError    = false ;
	
	if (thisFormObj.txtName.value == "")
	{
		hasError = true ;
		errorMsg += "\n- Name is a mandatory value" ;
	}
	if (thisFormObj.txtCompany.value == "")
	{
		hasError = true ;
		errorMsg += "\n- Company is a mandatory value" ;
	}
	if (thisFormObj.txtTeamManager.value == "")
	{
		hasError = true ;
		errorMsg += "\n- Team Manager is a mandatory value" ;
	}
	if (thisFormObj.txtEmail.value == "")
	{
		hasError = true ;
		errorMsg += "\n- Email is a mandatory value" ;
	}
	if (thisFormObj.txtDate.value == "")
	{
		hasError = true ;
		errorMsg += "\n- Date is a mandatory value" ;
	}
	
	if (!hasError)
	{
		if (emailCheck(thisFormObj.txtEmail.value))
		{
			thisFormObj.btnSubmit.readonly = true ;
			thisFormObj.btnSubmit.disabled = true ;
			thisFormObj.submit() ;
		}
	}
	else
	{alert(errorMsg) ;}
}

function emailCheck (emailStr) 
{
	var email_errMsg_Header = 'The following error(s) have occured:-\n';
	var emailPat=/^(.+)@(.+)$/
	var specialChars="\\(\\)<>@,;:\\\\\\\"\\.\\[\\]"
	var validChars="\[^\\s" + specialChars + "\]"
	var quotedUser="(\"[^\"]*\")"
	var ipDomainPat=/^\[(\d{1,3})\.(\d{1,3})\.(\d{1,3})\.(\d{1,3})\]$/
	var atom=validChars + '+'
	var word="(" + atom + "|" + quotedUser + ")"
	var userPat=new RegExp("^" + word + "(\\." + word + ")*$")
	var domainPat=new RegExp("^" + atom + "(\\." + atom +")*$")
	var matchArray=emailStr.match(emailPat)

	if (matchArray==null) 
	{
		alert(email_errMsg_Header + "\nThe email address supplied seems to be invalid. (check @ and .'s)")
		return false
	}
												
	var user=matchArray[1]
	var domain=matchArray[2]

	if (user.match(userPat)==null) 
	{											    
		alert(email_errMsg_Header + '\nThe username in the email address is invalid')
		return false
	}
											
	var IPArray=domain.match(ipDomainPat)
	if (IPArray!=null) 
	{
		for (var i=1;i<=4;i++) 
		{
			if (IPArray[i]>255) 
			{
				alert("The Destination IP Address Is Invalid")
				alert(email_errMsg_Header + '\nThe destination IP address is invalid')
				return false
			}
		}
		return true
	}

	var domainArray=domain.match(domainPat)

	if (domainArray==null) 
	{
		alert(email_errMsg_Header + '\nThe email address supplied includes an invalid domain name')
		return false
	}
													
	var atomPat=new RegExp(atom,"g")
	var domArr=domain.match(atomPat)
	var len=domArr.length

	if (domArr[domArr.length-1].length<2 || domArr[domArr.length-1].length>4) 
	{
		alert(email_errMsg_Header + '\nThe email address supplied does not have a correct suffix (.co.uk, .com...)')
		return false
	}
	if (len<2) 
	{
		alert(email_errMsg_Header + '\nThe email address supplied is missing a hostname')
		return false
	}

	//If we've gotten this far, everything's valid	
	return true;
}