function numbersonly(myfield, e, dec) 
{
    var key;
    var keychar;

    if (window.event)
    key = window.event.keyCode;
    else if (e)
    key = e.which;
    else
    return true;
    keychar = String.fromCharCode(key);

    // control keys
    if ((key==null) || (key==0) || (key==8) || 
    (key==9) || (key==13) || (key==27) )
    return true;

    // numbers
    else if ((("0123456789,").indexOf(keychar) > -1))
    return true;

    // decimal point jump
    else if (dec && (keychar == "."))
    {
        myfield.form.elements[dec].focus();
        return false;
    }
    else {
        return false;
    }
}

function isNumberKey(evt)
{
    var charCode = (evt.which) ? evt.which : event.keyCode
    if (charCode > 31 && (charCode < 48 || charCode > 57))
    return false;

    return true;
}
function NewWindow(url,windowname,width,height,features)
{
   width=(width)?width:screen.width/2;
   height=(height)?height:screen.height/2;
   var screenX = 30;//(screen.width/2 - width/2);
   var screenY = 30;//(screen.height/2 - height/2);
   var features= "width=" + width + ",height=" + height +",scrollbars=yes,status=no";
   features += ",screenX=" + screenX + ",left=" + screenX;
   features += ",screenY=" + screenY + ",top=" + screenY;
   
   var mywin=window.open(url, windowname, features);
   if (mywin)
   mywin.focus();
   return mywin;
}
function NewCentralWindow(url,windowname,width,height,features)
{
   width=(width)?width:screen.width/2;
   height=(height)?height:screen.height/2;
   var screenX = (screen.width/2 - width/2);
   var screenY = (screen.height/2 - height/2);
   var features= "width=" + width + ",height=" + height +",scrollbars=yes,status=no";
   features += ",screenX=" + screenX + ",left=" + screenX;
   features += ",screenY=" + screenY + ",top=" + screenY;
   
   var mywin=window.open(url, windowname, features);
   if (mywin)
   mywin.focus();
   return mywin;
}
function displayDate() {
   var months=new Array(13);
   months[1]="January";
   months[2]="February";
   months[3]="March";
   months[4]="April";
   months[5]="May";
   months[6]="June";
   months[7]="July";
   months[8]="August";
   months[9]="September";
   months[10]="October";
   months[11]="November";
   months[12]="December";
   var time=new Date();
   var lmonth=months[time.getMonth() + 1];
   var date=time.getDate();
   var year=time.getYear();
   if (year < 2000)   
	  year = year + 1900;
   document.write(lmonth + " ");
   document.write(date + ", " + year);
   return;
}

function emailCheck (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. */

alert("Email address seems incorrect (check @ and .'s)");
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) {
alert("Ths username contains invalid characters.");
return false;
   }
}
for (i=0; i<domain.length; i++) {
if (domain.charCodeAt(i)>127) {
alert("Ths domain name contains invalid characters.");
return false;
   }
}

// See if "user" is valid 

if (user.match(userPat)==null) {

// user is not valid

alert("The username doesn't seem to be 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) {
alert("Destination IP address is invalid!");
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) {
alert("The domain name does not seem to be valid.");
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) {
alert("The address must end in a well-known domain or two letter " + "country.");
return false;
}

// Make sure there's a host name preceding the domain.

if (len<2) {
alert("This address is missing a hostname!");
return false;
}

// If we've gotten this far, everything's valid!
return true;
}
function isblank(fe){
   	  // check that the value is not empty
   	  if (fe.value == "") {
   		 // its blank
   		 return true;
   	  } else {
   		 // it has data
   		 return false;
   	  }
}

function verify(frm, fields, msg) {
      // get fields marked required
      fieldarray = fields.split(",");
      
      // loop through all the elements on the form
      for (i=0; i<frm.elements.length; i++){
   	  
   	  // loop through each of the required fieldnames
   	  for (j=0; j<fieldarray.length; j++) {
   		 
   			// if a field is required (and were processing that field) and its blank
   			if (  fieldarray[j] == frm.elements[i].name ) {
   			   if (isblank(frm.elements[i])) {
   				  // display an error
   				  alert(msg);
   				  // set the cursor to he field that threw the error
   				  frm.elements[i].focus();
   				  // block the form from submitting
   				  return false;
   			   }   		 
   			}
   	  }
      }
      
      // exit clean and allow form to submit but check email address first!
	  if (emailCheck(frm.email.value)) {
		 return true;
	  }
	  else {
		 return false;
	  }
} 



function confirm_and_verify(frm, fields, msg, cf_msg) {
      // get fields marked required
      fieldarray = fields.split(",");
      
      // loop through all the elements on the form
      for (i=0; i<frm.elements.length; i++){
   	  
   	  // loop through each of the required fieldnames
   	  for (j=0; j<fieldarray.length; j++) {
   		 
   			// if a field is required (and were processing that field) and its blank
   			if (  fieldarray[j] == frm.elements[i].name ) {
   			   if (isblank(frm.elements[i])) {
   				  // display an error
   				  alert(msg);
   				  // set the cursor to he field that threw the error
   				  frm.elements[i].focus();
   				  // block the form from submitting
   				  return false;
   			   }   		 
   			}
   	  }
      }

      // exit clean and allow form to submit but check email address first!
	  if (emailCheck(frm.email.value)) {
            //alert(cf_msg);
            if (confirm(cf_msg)) {
                return true;
            }
            else {
                return false;
            }
        }
        else {
            return false;
        }
} 


function setVisibility(objId, sVisibility) {

        var obj = document.getElementById(objId);

         obj.style.display = sVisibility;
}