function submitbutton(){
    var submit_flag = 1;
	var form = document.frmSendSms;

	if(showCountryCode == 1) {
	  countryCode = form.countryCode.value;
      if(countryCode== 0){
        alert("Input a Country Code");
        form.countryCode.focus();
        submit_flag=0;
        return false;
      }
	}
	
	if(showMobileNumber == 1) {
	  mobileno = form.mobileNo.value;
      if(mobileno=="" || mobileno == "Mobile number"){
        alert("Input a Mobile No");
        form.mobileNo.focus();
        submit_flag=0;
        return false;
      }
    }

	if(showName == 1) {
	  name = form.name.value;
      if(name=="" || name=="Name"){
        alert("Input a Valid Name");
        form.name.focus();
        submit_flag=0;
        return false;
      }
	}

	if(showFromMobileNumber == 1) {
	  frommobileno = form.fromMobileNo.value;
      if(frommobileno=="" || frommobileno=="My Mobile"){
        alert("Input a Valid Mobile Number");
        form.frommobileno.focus();
        submit_flag=0;
        return false;
      }
	}
	  
	  message = form.message.value;
      if(message=="" || message=="Message"){
        alert("Input a Message");
        form.message.focus();
        submit_flag=0;
        return false;
      }

	 if(captchaSecurity == 1) {
	   captcha_code = form.captcha_code.value;
       if(captcha_code==""){
         alert("Input a security code");
         form.captcha_code.focus();
         submit_flag=0;
         return false;
       }
	 }

    if (submit_flag==1){
      return true;
    }

  }

function fromMobNoCheck() {
	var mno	= document.frmSendSms.fromMobileNo.value;
	if (mno=='My Mobile') { document.frmSendSms.fromMobileNo.value=''; }
	if (mno=='') { document.frmSendSms.fromMobileNo.value='My Mobile'; }
}

function mobNoCheck() {
	var mno	= document.frmSendSms.mobileNo.value;
	if (mno=='Mobile number') { document.frmSendSms.mobileNo.value=''; }
	if (mno=='') { document.frmSendSms.mobileNo.value='Mobile number'; }
}

function nameCheck() {
	var name	= document.frmSendSms.name.value;
	if (name=='Name') { document.frmSendSms.name.value=''; }
	if (name=='') { document.frmSendSms.name.value='Name'; }
}

function messageCheck() {
	var message	= document.frmSendSms.message.value;
	if (message=='Message') { document.frmSendSms.message.value=''; return false;}
	if (message=='') { document.frmSendSms.message.value='Message'; }
}

function showLimit(strLen) {
   if(strLen > messageLimit) {
      document.frmSendSms.message.value = document.frmSendSms.message.value.substr(0,messageLimit);
      return false;
   }
   else {
      document.getElementById('leftChar').innerHTML = messageLimit - strLen;
	  return true;
   }
}

// function which allows user to enter only numbers and backspace key
function allowNumeric(e) {
   var charCode = (e.which) ? e.which : window.event.keyCode;
      if(((charCode >= 48) && (charCode <= 57)) || (charCode == 8) ) {
          return true;
      }
      return false;
}