// JavaScript Document

// FUNCTION FOR REGISTRATION 

function checkFields() {  
	missinginfo = "";

if (isWhitespace(document.doregister.fname.value)) {
	missinginfo += "\n     -  Given name";
}

if (!isAllCharacters(document.doregister.fname.value)) {
	missinginfo += "\n     -  Given name  (*characters only)";
}

if (!isAllCharacters(document.doregister.lname.value)) {
	missinginfo += "\n     -  Last name  (*characters only)";
}


if (isWhitespace(document.doregister.lname.value)) {
	missinginfo += "\n     -  Last name";
}


//if(!isValidEmail(document.doregister.email.value)){
//	missinginfo += "\n     -  Email address";
//}
var regx = /^[a-zA-Z0-9._-]+@[a-zA-Z0-9.-]+\.[a-zA-Z]{2,6}$/;   
   	
if (document.doregister.email1.value==""||regx.test(document.doregister.email1.value)==false){
	missinginfo += "\n     -  Email";
}

 
if (isWhitespace(document.doregister.mobile.value)){
	missinginfo += "\n     -  Contact No";
}

if (document.doregister.country.value==""){
	missinginfo += "\n     -  Country";
}

if (document.doregister.reference.value==""){
	missinginfo += "\n     -  Reference";
}

if (missinginfo != "") {
	missinginfo ="_____________________________\n" +
	"You failed to correctly fill in your:\n" +
	missinginfo + "\n_____________________________" +
	"\nPlease re-enter and submit again!";
	alert(missinginfo);
return false;
}
else return true;
}


function showhide() 
{ 
	if(document.doregister.reference.value=='Friends')
	{
		if(document.getElementById("frd").style.display=="none")
		{
			document.getElementById("frd").style.display="block"
			document.getElementById("talk").style.display="none"
			document.getElementById("code").style.display="none"
			document.getElementById("referenceno").style.display="none"
		}	
    }
	else if(document.doregister.reference.value=='Other Talks')
    {
		if(document.getElementById("talk").style.display=="none")
		{
			document.getElementById("talk").style.display="block"
			document.getElementById("frd").style.display="none"
			document.getElementById("code").style.display="none"
			document.getElementById("referenceno").style.display="none"
		}	
	}
	else if(document.doregister.reference.value=='Special Code')
    {
		if(document.getElementById("code").style.display=="none")
		{
			document.getElementById("code").style.display="block"
			document.getElementById("frd").style.display="none"
			document.getElementById("talk").style.display="none"
			document.getElementById("referenceno").style.display="none"
		}	
	}
	
	else if(document.doregister.reference.value=='Reference Number')
	{
		if(document.getElementById("referenceno").style.display=="none")
		{
			document.getElementById("referenceno").style.display="block"
			document.getElementById("talk").style.display="none"
			document.getElementById("code").style.display="none"
			document.getElementById("frd").style.display="none"
		}	
    }
	
	else
	{
		document.getElementById("frd").style.display="none"
		document.getElementById("talk").style.display="none"
		document.getElementById("code").style.display="none"
		document.getElementById("referenceno").style.display="none"
	}
}




function showhideseminar() 
{ 
	if(document.getElementById("2").checked==true)
	{
			document.getElementById("sem2").style.display="block"
			document.getElementById("sem3").style.display="none"
	}
	else if(document.getElementById("3").checked==true){
			document.getElementById("sem3").style.display="block"
			document.getElementById("sem2").style.display="none"
	}
}


function checkRadio (frmName, rbGroupName) { 

	 var radios = document[frmName].elements[rbGroupName];
	 for (var i=0; i <radios.length; i++) {
	  if (radios[i].checked) {
	   return true;
	  }
	 }
	 return false;
}

function valFrm() {
	
	 if (!checkRadio("frm1","fruits"))
	  alert("You didnt select any fruits");
	 else
	  alert("You selected a fruit");
} 


function isNumberKey(evt)
      {
         var charCode = (evt.which) ? evt.which : event.keyCode
		 
         if (charCode > 31 && ( (charCode < 48 || charCode > 57) && (charCode > 43 || charCode < 43) ))
            return false;

         return true;
      }


///// Functions in Java Script ////

function AllowOnlyNumeric()
{
    // Get the ASCII value of the key that the user entered
    var key = window.event.keyCode;

    // Verify if the key entered was a numeric character (0-9) or a decimal (.)
    if ( (key > 47 && key < 58) || key == 46 )
        // If it was, then allow the entry to continue
        return;
    else
        // If it was not, then dispose the key and continue with entry
        window.event.returnValue = null;
}



 var whitespace =" \t\n\r ";
function isEmpty(str)
{  
	return ((str == null) || (str.length == 0))
}

//// isWhitespace is using the if  Field Empty //////

function isWhitespace(str)
{    var i;
	 var flag;
 	 if (isEmpty(str)) return true;	
	    for (i = 0; i < str.length; i++)
 	   {   
 	       // Check that current character isn't whitespace.
 	       var c = str.charAt(i);

		   if (whitespace.indexOf(c) == -1)
		   		return false;
 	   }	
 	   // All characters are whitespace.
		    return true;
			
			alert("Please Enter Username");
}



/// isValidEmail it checks the Email-Id is Valid or Not /////

function isValidEmail(emailStr)
{
	
			/* 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=/^(.+)@(.+)$/;
			/* The following string represents the pattern for matching all special
			   characters.  We don't want to allow special characters in the address. 
			   These characters include ( ) < > @ , ; : \ " . [ ]    */
			//var specialChars="\\(\\)<>@,;:\\\\\\\"\\.\\[\\]"
			var specialChars="\\(\\)<>@,`';:~!#$%^&*+=|{}?\\\\\\\"\\.\\[\\]";
			
			/* 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. "sg 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. sg@[123.124.233.4] is a legal
			   e-mail address. NOTE: The square brackets are required. */
			var ipDomainPat=/^\[(\d{1,3})\.(\d{1,3})\.(\d{1,3})\.(\d{1,3})\]$/;
			/* The following string represents an atom (basically a series of
			   non-special characters.) */
			var atom=validChars + '+';
			/* The following string represents one word in the typical username.
			   For example, in sg.sg@somewhere.com, sg and sg are words.
			   Basically, a word is either an atom or quoted string. */
			var word="(" + atom + "|" + quotedUser + ")";
			// The following pattern describes the structure of the user
			var userPat=new RegExp("^" + word + "(\\." + word + ")*$");
			/* 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];

			// 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
			var domainArray=domain.match(domainPat);
			if (domainArray==null) {
			//alert("The domain name doesn't seem to be valid.")
			    return false;
			}

			/* domain name seems valid, but now make sure that it ends in a
			   three-letter word (like com, edu, gov) or a two-letter word,
			   representing country (uk, nl, no), and that there's a hostname preceding 
			   the domain or country. */

			/* Now we need to break up the domain to get a count of how many atoms
			   it consists of. */
			var atomPat=new RegExp(atom,"g");
			var domArr=domain.match(atomPat);
			var len=domArr.length;
			if (domArr[domArr.length-1].length<2 || 
			    domArr[domArr.length-1].length>3) {
			   // the address must end in a two letter or three letter word.
			   //alert("The address must end in a three-letter domain, or two letter country.")
			   return false;
			}

			// Make sure there's a host name preceding the domain.
			if (len<2) {
			   var errStr="This address is missing a hostname!"
			   //alert(errStr)
			   return false;
			}

			// If we've gotten this far, everything's valid!
			return true;
}


function isAllCharacters(objValue)
{
		var characters="' -abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ."
		var tmp
		var lTag
		lTag = 0
		temp = (objValue.length)
		for (var i=0;i<temp;i++)
		{
			tmp=objValue.substring(i,i+1)
			if (characters.indexOf(tmp)==-1)
			{
				lTag = 1
			}
		}
		if(lTag == 1)
			return false
		else
			return true
}