// test value for day entry in date
function test_date_day(val)
{
  var pattern = /^[1-9]\d{0,1}$/;

  if( val.match(pattern)==null )
  {
    return false;
  }
  
  return true;
}

// test value for year entry in date
function test_date_year(val)
{
  var pattern = /^[1-9]\d{3}$/;

  if( val.match(pattern)==null)
  {
    return false;
  }
  return true;
}

// test number (maximum length is 32 digits)
function test_number(val)
{
  var pattern = /^\d{1,32}$/;

  if( val.match(pattern)==null)
  {
    return false;
  }
  return true;
}

/***
* This script and many more are available free online at 
* The JavaScript Source!! http://javascript.internet.com
*/
function test_email(emailStr) {
/* The following variable tells the rest of the function whether or not
to verify that the address ends in a two-letter country or well-known
TLD.  1 means check it, 0 means don't. */
	var checkTLD=1;
	
	/* The following is the list of known TLDs that an e-mail address must end with. */
	var knownDomsPat=/^(com|net|org|edu|int|mil|gov|arpa|biz|aero|name|coop|info|pro|museum)$/;
	
	/* The following pattern is used to check if the entered e-mail address
	fits the user@domain format.  It also is used to separate the username
	from the domain. */
	var emailPat=/^(.+)@(.+)$/;
	
	/* The following string represents the pattern for matching all special
	characters.  We don't want to allow special characters in the address. 
	These characters include ( ) < > @ , ; : \ " . [ ] */
	var specialChars="\\(\\)><@,;:\\\\\\\"\\.\\[\\]";
	
	/* The following string represents the range of characters allowed in a 
	username or domainname.  It really states which chars aren't allowed.*/
	var validChars="\[^\\s" + specialChars + "\]";
	
	/* The following pattern applies if the "user" is a quoted string (in
	which case, there are no rules about which characters are allowed
	and which aren't; anything goes).  E.g. "jiminy cricket"@disney.com
	is a legal e-mail address. */
	var quotedUser="(\"[^\"]*\")";
	
	/* The following pattern applies for domains that are IP addresses,
	rather than symbolic names.  E.g. joe@[123.124.233.4] is a legal
	e-mail address. NOTE: The square brackets are required. */
	var ipDomainPat=/^\[(\d{1,3})\.(\d{1,3})\.(\d{1,3})\.(\d{1,3})\]$/;
	
	/* The following string represents an atom (basically a series of non-special characters.) */
	var atom=validChars + '+';
	
	/* The following string represents one word in the typical username.
	For example, in john.doe@somewhere.com, john and doe are words.
	Basically, a word is either an atom or quoted string. */
	var word="(" + atom + "|" + quotedUser + ")";
	
	// The following pattern describes the structure of the user
	var userPat=new RegExp("^" + word + "(\\." + word + ")*$");
	
	/* The following pattern describes the structure of a normal symbolic
	domain, as opposed to ipDomainPat, shown above. */
	var domainPat=new RegExp("^" + atom + "(\\." + atom +")*$");
	
	/* Finally, let's start trying to figure out if the supplied address is valid. */
	
	/* Begin with the coarse pattern to simply break up user@domain into
	different pieces that are easy to analyze. */
	var matchArray=emailStr.match(emailPat);
	
	if (matchArray==null) {
	
	/* Too many/few @'s or something; basically, this address doesn't
	even fit the general mould of a valid e-mail address. */
	return false;
	}
	
	var user=matchArray[1];
	var domain=matchArray[2];
	
	// Start by checking that only basic ASCII characters are in the strings (0-127).
	
	for (i=0; i<user.length; i++) {
	if (user.charCodeAt(i)>127) {
	return false;
	   }
	}
	
	for (i=0; i<domain.length; i++) {
	if (domain.charCodeAt(i)>127) {
	return false;
	   }
	}
	
	// See if "user" is valid 
	
	if (user.match(userPat)==null) {
	// user is not valid
	return false;
	}
	
	/* if the e-mail address is at an IP address (as opposed to a symbolic
	host name) make sure the IP address is valid. */
	
	var IPArray=domain.match(ipDomainPat);
	if (IPArray!=null) {
	
	// this is an IP address
	
	for (var i=1;i<=4;i++) {
	if (IPArray[i]>255) {
	return false;
	   }
	}
	return true;
	}
	
	// Domain is symbolic name.  Check if it's valid.
	 
	var atomPat=new RegExp("^" + atom + "$");
	var domArr=domain.split(".");
	var len=domArr.length;
	for (i=0;i<len;i++) {
	if (domArr[i].search(atomPat)==-1) {
	return false;
	   }
	}
	
	/* domain name seems valid, but now make sure that it ends in a
	known top-level domain (like com, edu, gov) or a two-letter word,
	representing country (uk, nl), and that there's a hostname preceding 
	the domain or country. */
	
	if (checkTLD && domArr[domArr.length-1].length!=2 && 
	domArr[domArr.length-1].search(knownDomsPat)==-1) {
	return false;
	}
	
	// Make sure there's a host name preceding the domain.
	
	if (len<2) {
	return false;
	}
	
	// If we've gotten this far, everything's valid!
	return true;
}

function test_phone_number(val) {
  var pattern = /[^0-9, ]/;

  if( val.match(pattern)) {
    return false;
  }
  return true;
}

function test_radiobutton(rd) {
	pass = false;	
	for (i=rd.length-1; i > -1; i--) {		
		if (rd[i].checked == true) {
			pass = true;			
			break;			
		}
	}
	return pass;
}

function get_radiobutton(rd) {
	for (i=rd.length-1; i > -1; i--) {		
		if (rd[i].checked == true) {		
			return rd[i].value;
			break;			
		}
	}
	return false;
}

function test_selectbox(sb) {
	if (sb.options[sb.selectedIndex].value == '' ) {
		return false;
	}
	return true;
}

function test_checkbox(cb) {
	pass = false;
	for (i=cb.length-1; i > -1; i--) {		
		if (cb[i].checked == true) {
			pass = true;			
			break;			
		}
	}
	return pass;
}

function get_myelement(obj) {
  if(document.getElementById){ //DOM
    css = document.getElementById(obj).style;
  } else {
    if(document.all){// IE
    	css = document.all[obj].style;
    }
    if(document.layers){//NS
      css = document.layers[obj];
    }
  }
   return css;
}

function iswaytooYoung(thisform) {  
  byear = thisform.year.options[thisform.year.selectedIndex].value;
  bmonth = thisform.month.options[thisform.month.selectedIndex].value;
  bday = thisform.day.options[thisform.day.selectedIndex].value;
  under18 = false;  
  var myDate=new Date()
  
  if(byear != "" && bmonth != "" && bday != "") {
    if((myDate.getFullYear() -byear) < 18) {
      under18 = true;
    }
    else { 
      if((myDate.getFullYear() -byear) == 18 ) {
        if(myDate.getMonth() < bmonth ) {
          under18 = true;
        }
        else {
          if(myDate.getMonth() == bmonth ) {
            if(myDate.getDate() < bday ) {
              under18 = true;
            }
          }
        }
      }
    }
  }  
  return under18;
}

function get_radiobutton_value(rd) {
	pass = false;
	for (i=rd.length-1; i > -1; i--) {		
		if (rd[i].checked == true) {
			return rd[i].value			
		}
	}	
}

function get_selectbox_value(sb) {
	return sb.options[sb.selectedIndex].value;
}

function get_checkbox_value(cb) {
	for (i=cb.length-1; i > -1; i--) {
		if (cb[i].checked == true) {
			return cb[i].value;
			break;
		}
	}
	return false;
}

function get_checkbox_status(cb, val) {
	for (i=cb.length-1; i > -1; i--) {
		if (cb[i].checked == true && cb[i].value == val) {
			return true;
			break;
		}
	}
	return false;
}


function get_checkbox_checked(cb) {
	alert(cb);
	alert(cb.length);
	for (i=cb.length-1; i > -1; i--) {
		alert(cb[i])
		if (cb[i].checked == true) {
			return true;
			break;
		}
	}
	return false;
}