function isChecked(radio)
{
	var isCheck = false;
	for(var n=0; n < radio.length; n++)
	{
		if(radio[n].checked)
			isCheck = true;
	}
	return isCheck;
}
function isInteger(s)
{   var i;
    for (i = 0; i < s.length; i++)
    {   
        // Check that current character is number.
        var c = s.charAt(i);
        if (((c < "0") || (c > "9"))) return false;
    }
    // All characters are numbers.
    return true;
}

function stripCharsInBag(s, bag)
{   var i;
    var returnString = "";
    // Search through string's characters one by one.
    // If character is not in bag, append to returnString.
    for (i = 0; i < s.length; i++)
    {   
        // Check that current character isn't whitespace.
        var c = s.charAt(i);
        if (bag.indexOf(c) == -1) returnString += c;
    }
    return returnString;
}

function checkInternationalPhone(strPhone){
s=stripCharsInBag(strPhone,validWorldPhoneChars);
return (isInteger(s) && s.length >= minDigitsInIPhoneNumber);
}

function isEmail(nChamp) {
  if (nChamp.value.length > 0) {
    if ((nChamp.value.lastIndexOf(".") < nChamp.value.indexOf("@")+3 
      || nChamp.value.lastIndexOf(".") > nChamp.value.length-3 
      || nChamp.value.indexOf("@") < 1 ) 
      || nChamp.value.indexOf("@") != nChamp.value.lastIndexOf("@")) {
	return false;
      nChamp.focus();
      nChamp.select();
    }
  }
return true;
}