var phone_field_length=0;
function TabNext(obj,event,len,next_field) {
	if (event == "down") {
		phone_field_length=obj.value.length;
		}
	else if (event == "up") {
		if (obj.value.length != phone_field_length) {
			phone_field_length=obj.value.length;
			if (phone_field_length == len) {
				next_field.focus();
				}
			}
		}
	}

function validate2(myForm){
	if(!IsNumeric(myForm.areacode.value)){
		alert("Invalid Areacode! Please re-enter");
		myForm.areacode.focus();
		return (false)
	}
	else if(!IsNumeric(myForm.phonenumber1.value)){
		alert("Invalid Phone number! Please re-enter");
		myForm.phonenumber1.focus();
		return (false)
	}
	else if(!IsNumeric(myForm.phonenumber2.value)){
		alert("Invalid Phone number! Please re-enter");
		myForm.phonenumber2.focus();
		return (false)
	}
	if((myForm.areacode.value.length+myForm.phonenumber1.value.length+myForm.phonenumber2.value.length) < 10){
		alert("Phone number length can not be less than 10");
		myForm.phonenumber2.focus();
		return (false)
	}

}
function IsNumeric(strString)
   //  check for valid numeric strings	
   {
   var strValidChars = "0123456789.-";
   var strChar;
   var blnResult = true;

   if (strString.length == 0) return false;

   //  test strString consists of valid characters listed above
   for (i = 0; i < strString.length && blnResult == true; i++)
      {
      strChar = strString.charAt(i);
      if (strValidChars.indexOf(strChar) == -1)
         {
         blnResult = false;
         }
      }
   return blnResult;
   }
 
function reminder() {
el=document.getElementById("reminder");
el2=document.getElementById("signin");
if (el.style.display=="none") {
	el.style.display="block";
	el2.style.display="none";
	} else {
	el.style.display="none";
	el2.style.display="block";
	}
}  

function back() {
document.getElementById("reminder").style.display="none";
document.getElementById("registerform").style.display="none";
document.getElementById("reg_completed").style.display="none";
document.getElementById("signin").style.display="block";
} 

function register() {
document.getElementById("registerform").style.display="block";
document.getElementById("signin").style.display="none";
}