<!--
function validate_email(field,alerttxt)
{
	with (field)
	{
		apos=value.indexOf("@");
		dotpos=value.lastIndexOf(".");
	
		if (apos<1||dotpos-apos<2) 
  		{
	  		alert(alerttxt);
	  		return false;
	  	}
		else 
		{
			return true;
		}
	}
}//validate email

function validate_name(field,alerttxt)
{
	with (field)
	{
		if(!(/^[A-za-z]+\s*[A-za-z]*$/i).test(value))
 		{
	 		alert(alerttxt); 
	 		return false;
	 	}
		else 
		{
			return true;
		}

	}
}//validate name

function validate_num(field,alerttxt)
{
	with (field)
	{
		var pos = value.search(/^\d{3}-\d{3}-\d{4}$/);
	
		if(pos != "0")
 		{
	 		alert(alerttxt);
	 		return false;
	 	}
		else 
		{
			return true;
		}
	}
}//validate num

function validate_form(thisform)
{
	with (thisform)
	{
		
  	if (validate_name(sender_name,"Please enter a name!")==false)
  	{	sender_name.focus();return false;}
  	
	if (validate_num(sender_num,"Please enter a number with the form xxx-xxx-xxxx!")==false)
  	{	sender_num.focus();return false;}
	
  	return true;
	}
}

function validate_joinform(thisform)
{
	with (thisform)
	{
	
		if (validate_name(sender_name,"Please enter a name!")==false)
  		{	sender_name.focus();return false;}
	
  		if (validate_email(sender_email,"Not a valid e-mail address!")==false)
  		{	sender_email.focus();return false;}

  		return true;
	}
}

// -->