function checkApplication()
{   
    
    if(trim(document.getElementById('name').value)=="")
    {
        alert("Please enter your name.")
        document.getElementById('name').value="";
        document.getElementById('name').focus();
        return false;
    }

    if(trim(document.getElementById('name').value)!="")
    {
        if(!checkname(document.getElementById('name').value))
        {
            alert("Please enter your valid name.")
            document.getElementById('name').value="";
            document.getElementById('name').focus();
            return false;
        }
    }

    if(trim(document.getElementById('qualification').value)=="")
    {
        alert("Please enter your qualification.")
        document.getElementById('qualification').value="";
        document.getElementById('qualification').focus();
        return false;
    }


    if(trim(document.getElementById('email').value)=="")
    {
        alert("Please enter your email address.")
        document.getElementById('email').value="";
        document.getElementById('email').focus();
        return false;
    }
    if(trim(document.getElementById('email').value)!="")
    {
        if(isEmail(trim(document.getElementById('email').value))==false)
        {
            alert("Please enter your valid email address.")
            document.getElementById('email').value="";
            document.getElementById('email').focus();
            return false;
        }
    }

    if(trim(document.getElementById('mobilenumber').value)=="")
    {
        alert("Please enter your mobile number.")
        document.getElementById('mobilenumber').value="";
        document.getElementById('mobilenumber').focus();
        return false;
    }
    if(trim(document.getElementById('mobilenumber').value)!="")
    {
        if(!checkPhone(document.getElementById('mobilenumber').value))
        {
            alert("Please enter your valid mobile number.")
            document.getElementById('mobilenumber').value="";
            document.getElementById('mobilenumber').focus();
            return false;
        }

        if(!checkPhoneLength(document.getElementById('mobilenumber').value))
        {
            alert("Please enter your valid 10 digit mobile number.")
            document.getElementById('mobilenumber').value="";
            document.getElementById('mobilenumber').focus();
            return false;
        }
    }

    if(trim(document.getElementById('file').value) == "")
    {
            alert("Please upload resume.")
            //document.getElementById('file').value="";
            document.getElementById('file').focus();
            return false;
    }else{

            var strLocation = document.getElementById('file').value;

            var strFile = strLocation.split(".");

            var arrFileExtension = new Array(3);

            var error = false;
            
            arrFileExtension[0] = "doc";
            arrFileExtension[1] = "docx";
            arrFileExtension[2] = "pdf";
            arrFileExtension[3] = "txt";

            var len = arrFileExtension.length;

            var x=0;
            
            for (x=0; x<len; x++)
            {
                if (strFile[strFile.length - 1].toUpperCase() == arrFileExtension[x].toUpperCase())
                {
                    error = true;
                    break;
                }
            }

            if(error == false){
                alert("Please upload valid resume file.")
                document.getElementById('file').value="";
                document.getElementById('file').focus();
                return false;
            }
    }

    return true;
}

function trim(inputString)
{
    if (typeof inputString != "string") {
        return inputString;
    }
    var retValue = inputString;
    var ch = retValue.substring(0, 1);

    while (ch == " ") {
        retValue = retValue.substring(1, retValue.length);
        ch = retValue.substring(0, 1);
    }

    ch = retValue.substring(retValue.length-1, retValue.length);
    while (ch == " ") {
        retValue = retValue.substring(0, retValue.length-1);
        ch = retValue.substring(retValue.length-1, retValue.length);
    }
    while (retValue.indexOf("  ") != -1) {
        retValue = retValue.substring(0, retValue.indexOf("  ")) + retValue.substring(retValue.indexOf("  ")+1, retValue.length);
    }
    return retValue;
}


function checkname(sText)
{
    var ValidChars = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ ";
    var IsNumber=true;
    var Char;
    if(sText.length==0)
    {
        return false;
    }
    else
    {
        for (i = 0; i < sText.length && IsNumber == true; i++)
        {
            Char = sText.charAt(i);
            if (ValidChars.indexOf(Char) == -1)
            {
                IsNumber = false;
            }
        }
        return IsNumber;
    }
}

function checkcity(sText)
{
    var ValidChars = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ- 1234567890";
    var IsNumber=true;
    var Char;
    if(sText.length==0)
    {
        return false;
    }
    else
    {
        for (i = 0; i < sText.length && IsNumber == true; i++)
        {
            Char = sText.charAt(i);
            if (ValidChars.indexOf(Char) == -1)
            {
                IsNumber = false;
            }
        }
        return IsNumber;
    }
}

function isEmail (emailIn){
    var isEmailOk = false;
    var filter = /^[a-zA-Z0-9][a-zA-Z0-9._-]*\@[a-zA-Z0-9-]+(\.[a-zA-Z][a-zA-Z-]+)+$/
    if(emailIn.search(filter) != -1)
    {
        isEmailOk = true;
    /*	var arr = emailIn.split(".");
			if(arr[1]!="edu")
		    isEmailOk = false;*/
    }
    if(emailIn.indexOf("..") != -1)
        isEmailOk = false;
    if(emailIn.indexOf(".@") != -1)
        isEmailOk = false;
    return isEmailOk;
}

function isValid(who) {
    var invalidChars=new Array("~","!","@","#","$","%","^","&","*","(",")","+","=","[","]",":",";",",","\"","'","|","{","}","\\","/","<",">","?");
    var testArr=who.split("");
    for(var i=0; i < testArr.length; i++) {
        for(var j=0; j<invalidChars.length; j++) {
            if(testArr[i]==invalidChars[j]) {
                return false;
            }
        }
    }
    return true;
}

function checkoption(sText)
{
    var ValidChars = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ-";
    var IsNumber=true;
    var Char;
    if(sText.length==0)
    {
        return false;
    }
    else
    {
        for (i = 0; i < sText.length && IsNumber == true; i++)
        {
            Char = sText.charAt(i);
            if (ValidChars.indexOf(Char) == -1)
            {
                IsNumber = false;
            }
        }
        return IsNumber;
    }
}




function isfl(who) {
    var invalidChars=new Array("-","_",".");
    var testArr=who.split("");
    which=0;
    for(var i=0; i<2; i++) {
        for(var j=0; j<invalidChars.length; j++) {
            if(testArr[which]==invalidChars[j]) {
                return false;
            }
        }
        which=testArr.length-1;
    }
    return true;
}

function isDomain(who) {
    var invalidChars=new Array("-","_",".");
    var testArr=who.split("");
    if(testArr.length<2||testArr.length>4) {
        return false;
    }
    for(var i=0; i<testArr.length; i++) {
        for(var j=0; j<invalidChars.length; j++) {
            if(testArr[i]==invalidChars[j]) {
                return false;
            }
        }
    }
    return true;
}




function checkPhone(strPhone)
{
    var digits = "0123456789+-()/";
    var phoneNumberDelimiters = "-";
    var phoneNumberDelimiters1 = "+";
    var validPhoneChars = phoneNumberDelimiters;
    var validPhoneChars1 = phoneNumberDelimiters1;
    s=stripCharsInBag(strPhone,validPhoneChars);
    s=stripCharsInBag(s,validPhoneChars1);
    //return (isInteger(s));
    return inValidCharSet(strPhone,digits)
}

function checkPhoneLength(strPhone){

    if(strPhone.length < 10){
        return false;
    }else{
        return true;
    }

}

function stripCharsInBag(s, bag)
{
    var i;
    var returnString = "";
    for (i = 0; i < s.length; i++)
    {
        var c = s.charAt(i);
        if (bag.indexOf(c) == -1) returnString += c;
    }
    return returnString;
}

function inValidCharSet(str,charset){
    var result = true;
    for (var i=0;i<str.length;i++)
        if (charset.indexOf(str.substr(i,1))<0){
            result = false;
            break;
        }
    return result;
}

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 stripCharsInBag(s, bag)
{
    var i;
    var returnString = "";
    for (i = 0; i < s.length; i++)
    {
        var c = s.charAt(i);
        if (bag.indexOf(c) == -1) returnString += c;
    }
    return returnString;
}

function checkPhoneLength(strPhone){

    if(strPhone.length < 10){
        return false;
    }else{
        return true;
    }

}