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;				

}



function validate()

{

	var emailID = document.frmRegister.email;

	var password = document.frmRegister.passwd;

	var fname = document.frmRegister.fullName;

	var bday = document.frmRegister.birthday_day;

	var bmonth = document.frmRegister.birthday_month;

	var byear = document.frmRegister.birthday_year;



	if ((fname.value==null)||(fname.value==""))

	{

		alert("Please Enter your Full Name");

		fname.focus();

		return false;

	}



	if ((emailID.value==null)||(emailID.value==""))

	{

		alert("Please Enter your Email ID");

		emailID.focus();

		return false;

	}

	

	if ((password.value==null)||(password.value==""))

	{

		alert("Please Enter your Password");

		password.focus();

		return false;

	}	

	

	if ((bday.value==null)||(bday.value=="")||(bday.value=="-1"))

	{

		alert("Please Enter your Birthday - Day");

		bday.focus();

		return false;

	}	



	if ((bmonth.value==null)||(bmonth.value=="")||(bmonth.value=="-1"))

	{

		alert("Please Enter your Birthday - Month");

		bmonth.focus();

		return false;

	}

	

	if ((byear.value==null)||(byear.value=="")||(byear.value=="-1"))

	{

		alert("Please Enter your Birthday - Year");

		byear.focus();

		return false;

	}

	

	if (echeck(emailID.value)==false)

	{

		emailID.value="";

		emailID.focus();

		return false;

	}

	

	return true;

}