function checkemail(checkStr)
{
// test if valid email address, must have @ and .
var checkEmail = "@.";
//var checkStr = document.forms[0].email.value;
var EmailValid = false;
var EmailAt = false;
var EmailPeriod = false;
var error = "";

for (i = 0;i < checkStr.length;i++)
{
ch = checkStr.charAt(i);

for (j = 0;j < checkEmail.length;j++)
{

if (ch == checkEmail.charAt(j) && ch == "@")
EmailAt = true;

if (ch == checkEmail.charAt(j) && ch == ".")
EmailPeriod = true;

if (EmailAt && EmailPeriod)
break;

if (j == checkEmail.length)
break;
}

// if both the @ and . were in the string
if (EmailAt && EmailPeriod)
{
EmailValid = true
break;
error = "";
}

}

if (!EmailValid)
{
error = " - Email must contain an \"@\" and a \".\"\n";
}

return error;
}

function checkform()
{

var alertsay = ""; 

// Compulsary Values

if (document.forms[0].Name.value == "")
{
alertsay += "- You must enter your Name\n";
}

if (document.forms[0].Email.value == "")
{
}

else
{
alertsay += checkemail(document.forms[0].Email.value);
}

if (document.forms[0].Enquiry.value == "")
{
alertsay += "- You must enter a Enquiry\n";
}

if (document.forms[0].Tel.value == "")
{
alertsay += "- You must enter your Telephone Number\n";
}

if (alertsay)
{
alert("The following error(s) occurred:\n" + alertsay.substring(alertsay,alertsay.length-1) + "\n\nForm would not be processed");
return false;
}

else
{

//alert("No errors occurred:\n" + "\n\nForm would be processed");

return true;
}

}