/*email check function*/

//------------------Email checking functions---------------------------

function emailcheck(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("The eMail address '@' convention appears to be invalid.")

	return false

	}

	if (str.indexOf(at)==-1 || str.indexOf(at)==0 || str.indexOf(at)==lstr){

	alert("The eMail address '@' convention appears to be invalid.")

	return false

	}

	if (str.indexOf(dot)==-1 || str.indexOf(dot)==0 || str.indexOf(dot)==lstr){

	alert("The eMail address 'dot' convention appears to be invalid.")

	return false

	}

	if (str.indexOf(at,(lat+1))!=-1){

	alert("The eMail address '@' convention appears to be invalid.")

	return false

	}

	if (str.substring(lat-1,lat)==dot || str.substring(lat+1,lat+2)==dot){

	alert("The eMail address 'dot' convention appears to be invalid.")

	return false

	}

	if (str.indexOf(dot,(lat+2))==-1){

	alert("The eMail address 'dot' convention appears to be invalid.")

	return false

	}

	if (str.indexOf(" ")!=-1){

	alert("The eMail address spacing convention appears to be invalid.")

	return false

	}

}

//----------End of email checking funcition-------------

//------------------User existing check through -AJAX- --------------------------

function Inint_AJAX() {

   try { return new ActiveXObject("Msxml2.XMLHTTP");  } catch(e) {} //IE

   try { return new ActiveXObject("Microsoft.XMLHTTP"); } catch(e) {} //IE

   try { return new XMLHttpRequest();          } catch(e) {} //Native Javascript

   alert("XMLHttpRequest not supported");

   return null;

};



function check_user() {

	var  user_name=document.frm.username.value;

	if(emailcheck(document.frm.username.value)==false &&  user_name!="")

		{

			return false

		}

		else

		{

     var req = Inint_AJAX();

	req.onreadystatechange = function () { 

          if (req.readyState==4) {

               if (req.status==200) {

                    document.getElementById('disp').innerHTML=req.responseText; //retuen value

               } 

          }

     };

     req.open("GET", "usercheck.php?user_name="+user_name,true); //make connection

     req.setRequestHeader("Content-Type", "application/x-www-form-urlencoded;charset=iso-8859-1"); // set Header

     req.send(null); //send value

	}

}

function Validator(frm)

{

	//alert()

if((frm.username.value==null)||(frm.username.value==""))

		{

			alert("Please Enter Email ID")

			frm.username.focus()

			return false

		}

		if(emailcheck(frm.username.value)==false)

		{

			frm.username.value=""

			 frm.username.focus()

			return false

		}

	 if((frm.email.value==null)||(frm.email.value==""))

		{

				alert("Please fill the Name");

				frm.email.focus()

				return false

		}

	 if((frm.password1.value==null)||(frm.password1.value==""))

		{

				alert("Please fill the password");

				frm.password1.focus()

				return false

		}

		if(frm.password1.value.length<6)

		{

			alert("Your password must be minimum 6 characters");

			frm.password1.focus();

			return false;

		}

		if(frm.password2.value.length<6)

		{

				alert("Your confirm password must be minimum 6 characters");

				frm.password2.focus();

				return false;

		}

		if(frm.password1.value!= frm.password2.value)

		{

				alert("Password Mismatch");

				frm.password1.focus();

				return false;

		}

	 		

}