function CheckFormEmail() {

	var errorMsg = "";
	var errorMsgLong = "";
	   
	if (document.MailForm.SenderName.value.length < 2) {
		errorMsg += "\n\tUw Naam \t\t- Vul uw eigen naam in";
    } 
	
	if (document.MailForm.SenderEmail.value.length < 2) {
		errorMsg += "\n\tUw e-mail adres \t\t- Vul uw eigen e-mail adres in";
    } 
	
	var AtSym    = document.MailForm.SenderEmail.value.indexOf('@');
	var Period   = document.MailForm.SenderEmail.value.lastIndexOf('.');
	var Space    = document.MailForm.SenderEmail.value.indexOf(' ');
	var Length   = document.MailForm.SenderEmail.value.length - 1 ;

	if ((AtSym < 1) ||                  
    (Period <= AtSym+1) || 
    (Period == Length ) ||      
    (Space  != -1))      
   {  
      errorMsg += "\n\tUw E-mail Adres \t\t- Vul een geldig e-mail adres in";
   }
   
	if (document.MailForm.ReceiverName.value.length < 2) {
		errorMsg += "\n\tNaam Ontvanger \t\t- Vul de Naam in van de Ontvanger";
    } 
	
	if (document.MailForm.ReceiverEmail.value.length < 2) {
		errorMsg += "\n\tE-mail Ontvanger\t- Vul e-mail adres Ontvanger in";
    } 
	
 	var AtSym    = document.MailForm.ReceiverEmail.value.indexOf('@');
	var Period   = document.MailForm.ReceiverEmail.value.lastIndexOf('.');
	var Space    = document.MailForm.ReceiverEmail.value.indexOf(' ');
	var Length   = document.MailForm.ReceiverEmail.value.length - 1 ;

	if ((AtSym < 1) ||                  
    (Period <= AtSym+1) || 
    (Period == Length ) ||      
    (Space  != -1))      
   {  
      errorMsg += "\n\tE-mail Ontvanger \t\t- Vul een geldig e-mail adres in";
   }
   
	if ((errorMsg != "") || (errorMsgLong != "")){
		msg = "_____________________________________________________________________\n\n";
		msg += "Er zijn problemen geconstateerd met één of meerdere invulvelden\n";
		msg += "_____________________________________________________________________\n\n";
		msg += "U dient de volgende velden (nog) goed in te vullen: -\n";
		
		errorMsg += alert(msg + errorMsg + "\n\n" + errorMsgLong);
		return false;
	}
	

	return true;
}