/*Jennifer Madden Script*/


function checkEmail(emField){  //reference to email field passed as argument

var fieldValue = emField.value  // 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
}