function validateid()
{
	var numb="0123456789";
        var isnum=true;
        var Char;

	for (i=0; i<document.searchidform.searchid.value.length && isnum==true; i++)
        {
                Char = document.searchidform.searchid.value.charAt(i);
                if (numb.indexOf(Char) == -1)
                {
                        alert ("Unit numbers are numeric only, please re-enter your number.");
                        return false;
                }
        }
}