// email code //
/**
 * DHTML email validation script. Courtesy of SmartWebby.com (http://www.smartwebby.com/dhtml/)
 */
 
var rand_one = Math.ceil(9*Math.random());
var rand_two = Math.ceil(9*Math.random());
var rand_ans = rand_one + rand_two;

function echeck(str) {

		var at="@";
		var dot=".";
		var lat=str.indexOf(at);
		var lstr=str.length;
		var ldot=str.indexOf(dot);
		if (str.indexOf(at)==-1){
		   alert("Invalid E-mail ID");
		   return false;
		}

		if (str.indexOf(at)==-1 || str.indexOf(at)==0 || str.indexOf(at)==lstr){
		   alert("Invalid E-mail ID");
		   return false;
		}

		if (str.indexOf(dot)==-1 || str.indexOf(dot)==0 || str.indexOf(dot)==lstr){
		    alert("Invalid E-mail ID");
		    return false;
		}

		 if (str.indexOf(at,(lat+1))!=-1){
		    alert("Invalid E-mail ID");
		    return false;
		 }

		 if (str.substring(lat-1,lat)==dot || str.substring(lat+1,lat+2)==dot){
		    alert("Invalid E-mail ID");
		    return false;
		 }

		 if (str.indexOf(dot,(lat+2))==-1){
		    alert("Invalid E-mail ID");
		    return false;
		 }
		
		 if (str.indexOf(" ")!=-1){
		    alert("Invalid E-mail ID");
		    return false;
		 }

 		 return true;
	}
// end of email code //

// phone code //
// Declaring required variables
var digits = "0123456789";
// non-digit characters which are allowed in phone numbers
var phoneNumberDelimiters = "()- ";
// characters which are allowed in international phone numbers
// (a leading + is OK)
var validWorldPhoneChars = phoneNumberDelimiters + "+";
// Minimum no of digits in an international phone no.
var minDigitsInIPhoneNumber = 10;

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 trim(s)
{   var i;
    var returnString = "";
    // Search through string's characters one by one.
    // If character is not a whitespace, append to returnString.
    for (i = 0; i < s.length; i++)
    {   
        // Check that current character isn't whitespace.
        var c = s.charAt(i);
        if (c != " ") returnString += c;
    }
    return returnString;
}
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){
var bracket=3;
strPhone=trim(strPhone);
if(strPhone.indexOf("+")>1) return false;
if(strPhone.indexOf("-")!=-1)bracket=bracket+1;
if(strPhone.indexOf("(")!=-1 && strPhone.indexOf("(")>bracket)return false;
var brchr=strPhone.indexOf("(");
if(strPhone.indexOf("(")!=-1 && strPhone.charAt(brchr+2)!=")")return false;
if(strPhone.indexOf("(")==-1 && strPhone.indexOf(")")!=-1)return false;
s=stripCharsInBag(strPhone,validWorldPhoneChars);
return (isInteger(s) && s.length >= minDigitsInIPhoneNumber);
}
// end of phone code //


function ValidateForm(){
	var name=document.frmSample.fname;

	if((name.value==null)||(name.value==""))
	{
		alert("Please Enter your Name");
		name.focus();
		return false;
	}

	var emailID=document.frmSample.email;
	
	if ((emailID.value==null)||(emailID.value=="")){
		alert("Please Enter your Email ID");
		emailID.focus();
		return false;
	}
	if (echeck(emailID.value)==false){
		emailID.value="";
		emailID.focus();
		return false;
	}

	var Phone=document.frmSample.phone;
	
	if ((Phone.value==null)||(Phone.value=="")){
		alert("Please Enter your Phone Number");
		Phone.focus();
		return false;
	}
	if (checkInternationalPhone(Phone.value)==false){
		alert("Please Enter a Valid Phone Number");
		Phone.value="";
		Phone.focus();
		return false;
	}


	var message=document.frmSample.message;

	if((message.value==null)||(message.value==""))
	{
		alert("Please Enter your message");
		message.focus();
		return false;
	}

	var randAnswer=document.frmSample.randAns;

	if(!(rand_ans==randAnswer.value))
	{
		alert("Please Enter right answer");
		randAnswer.value="";
		randAnswer.focus();
		return false;
	}else
	{
		return true;
	}

//return false;

}