/*
 ===============================CHECK EMAIL MODULE============================================== 
Usage example:
	var myForm = document.imageForm
	var eField = myForm.email
	if(checkEmail(eField) != false)
	{
		myForm.submit()
	}
 ================================================================================================== 
 Source: http://jennifermadden.com/javascript/emailValidation.html
*/

function checkEmail(emField)
{ //reference to email field passed as argument
	var fieldValue = emField // store field's entire value in variable
	// Begin Valid Email Address Tests
	//if field is not empty
	if (fieldValue != "")
	{ 
		var atSymbol = 0
		//loop through field value string
		for(var a = 0; a < fieldValue.length; a++)
		{ 
			//look for @ symbol and for each @ found, increment atSymbol variable by 1
			if(fieldValue.charAt(a) == "@")
			{ 
				atSymbol++
			}
		}
		// if more than 1 @ symbol exists
		if(atSymbol > 1)
		{ 
			// then cancel and don't submit form
			//alert("Please Enter A Valid Email Address") 
			return false
		}
		// if 1 @ symbol was found, and it is not the 1st character in string
		if(atSymbol == 1 && fieldValue.charAt(0) != "@")
		{ 
			//look for period at 2nd character after @ symbol 
			var period = fieldValue.indexOf(".",fieldValue.indexOf("@")+2) 
			// "." immediately following 1st "." ? 
			var twoPeriods = (fieldValue.charAt((period+1)) == ".") ? true : false 
			//if period was not found OR 2 periods together OR field contains less than 5 characters OR period is in last position
			if(period == -1 || twoPeriods || fieldValue.length < period + 2 || fieldValue.charAt(fieldValue.length-1)==".")
			{
				// then cancel and don't submit form
				//alert("Please Enter A Valid Email Address") 
				return false
			}
		}
		// no @ symbol exists or it is in position 0 (the first character of the field)
		else
		{ 
			// then cancel and don't submit form
			//alert("Please Enter A Valid Email Address")
			return false 
		}
	}
	// if field is empty
	else
	{ 
		// then cancel and don't submit form
		//alert("Please Enter A Valid Email Address")
		return false 
	}
	//all tests passed, submit form
	//alert("VALID EMAIL ADDRESS!")
	return true
}
/* ================================ END OF CHECK EMAIL MODULE =============================== */