// JavaScript Document



function validate()
{

var a = null
var b = null
var c = null
var d = null

// Set a boolean to true

valid = true;


// Simple if statement that checks to see 
// if the field below has an empty string

if (document.mainform.board.value == "- - - - - - - " )
{

var a = "You must enter board basis"
//alert ( "You must enter board basis" );
// if the string is empty then the boolean is
// set to false
valid = false;

}

if (document.mainform.name.value == "")
{
var b = "You must enter your full name"
//alert ( "You must enter your full name");

valid = false;
}

if (document.mainform.email.value == "")
{
var c = "You must enter your email address"
//alert ( "You must enter your email address");

valid = false;
}

if (document.mainform.email.value != "")
{
x=document.mainform
at=x.email.value.indexOf("@")
if (at == -1)
	{
	var c = "Please enter a valid email address"
	//alert("Please enter a valid email address")
	valid = false;
	}
}

if (document.mainform.areacode.value == "" && document.mainform.areacode.value == "")
{
	var d = "You must enter your full telephone number"
	//alert ( "You must enter your full telephone number");
	
valid = false;
}

if(document.mainform.areacode.value == "" && document.mainform.telephone.value != "" )
{
var d = "You have not entered your area code correctly"
	//alert ( "You have not entered your area code correctly");
valid = false;
}


if(document.mainform.telephone.value == "" && document.mainform.areacode.value != "" )
{
    
var d = "You have not entered your telephone number correctly"
	//alert ( "You have not entered your telephone number correctly");
valid = false;
}


if (a != null && b != null && c != null && d != null)
{
	alert (a + '\n' +
		   b + '\n' +
		   c + '\n' +	
		   d)
}
else
{
	if (a == null && b != null && c != null && d != null)
	{
		alert ( b + '\n' + c + '\n' + d)
	}
	
	if (b == null && a != null && c != null && d != null)
	{
		alert ( a + '\n' + c + '\n' + d)
	}
	
	if (c == null && b != null && a != null && d != null)
	{
		alert ( a + '\n' + b + '\n' + d)
	}
	
	if (d == null && b != null && c != null && a != null)
	{
		alert ( a + '\n' + b + '\n' + c)
	}
	
	if (a == null && b == null && c != null && d != null)
	{
		alert (c + '\n' + d)
	}
	
	if (a == null && c == null && b != null && d != null)
	{
		alert (b + '\n' + d)
	}
	
	if (a == null && d == null && b != null && c != null)
	{
		alert (b + '\n' + c)
	}
	
	if (b == null && c == null && a != null && d != null)
	{
		alert (a + '\n' + d)
	}
	
	if (b == null && d == null && a != null && c != null)
	{
		alert (a + '\n' + c)
	}
	
	if (c == null && d == null && b != null && a != null)
	{
		alert (a + '\n' + b)
	}

	if (a == null && b == null && c == null && d != null )
	{
		alert (d)
	}
	

	if (a == null && b == null && d == null && c != null )
	{
		alert (c)
	}
	

	if (b == null && c == null && d == null && a != null)
	{
		alert (a)
	}

	if (a == null && c == null && d == null  && b != null)
	{
		alert (b)
	}


}
	
return valid;

}