//###########################################
function checkForm(frm)
{

	var msg = "";
	
	if(frm.name.value == "")
		msg += "\n   Your Name     ";
	if(frm.email.value == "" || (!isEmail(frm.email.value)))
		msg += "\n   Your (valid) email address     \n";
	
	if(frm.friend1_name.value == "")
		msg += "\n   At least 1 friends name!     ";
	if(frm.friend1_email.value == "" || (!isEmail(frm.friend1_email.value)))
		msg += "\n   At least 1 valid friends email!     ";
		
	for(x=2; x<=5; x++){
		if((eval('frm.friend'+x+'_email').value != "" && (!isEmail(eval('frm.friend'+x+'_email').value))) ||
		 (eval('frm.friend'+x+'_name').value != "" && eval('frm.friend'+x+'_email').value == ""))
				msg += "\n   A valid EMAIL for friend number "+x+"     ";
		else if(eval('frm.friend'+x+'_email').value != "" && eval('frm.friend'+x+'_name').value == "")
			msg += "\n   A NAME for friend number "+x+"     ";
	}
	
	if(msg != ""){
		alert("Please supply the following:          \n" + msg);
		return false;
	}else{
		return true;
	}

}


//####################  TELEPHONE FUNCTION  #########
function is_number(num)
{
	var supported = 0;
  if (window.RegExp) {
 		var r1 = new RegExp("[^0-9 ]");
		return (!r1.test(num))
  }
}

//####################  EMAIL FUNCTION  ###############
function isEmail(str) {
  // are regular expressions supported?
  var supported = 0;
  if (window.RegExp) {
    var tempStr = "a";
    var tempReg = new RegExp(tempStr);
    if (tempReg.test(tempStr)) supported = 1;
  }
  if (!supported) 
    return (str.indexOf(".") > 2) && (str.indexOf("@") > 0);
  var r1 = new RegExp("(@.*@)|(\\.\\.)|(@\\.)|(^\\.)");
  var r2 = new RegExp("^.+\\@(\\[?)[a-zA-Z0-9\\-\\.]+\\.([a-zA-Z]{2,4}|[0-9]{1,4})(\\]?)$");
  return (!r1.test(str) && r2.test(str));
}