function echeck(str)

{	var at="@";
	var dot=".";
	var lat=str.indexOf(at);
	var lstr=str.length;
	var ldot=str.indexOf(dot);
	var err = 0;

	if (str.indexOf(at)== -1)
	    err++;	

	if(str.indexOf(at) == -1 || str.indexOf(at) == 0 || str.indexOf(at) == lstr)
	    err++;

	if(str.indexOf(dot) == -1 || str.indexOf(dot) == 0 || str.indexOf(dot) == lstr)
	    err++;

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

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

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

	if(str.indexOf(" ")!= -1)
	    err++;

	if (err != 0)
	    return false;	
	else    
	    return true;
}




function vsbe()
{
    var err="";
    
    if(document.getElementById('friend_name').value == "")
	err+="Complete Friend Name field\n";
    if(document.getElementById('subject').value == "")
	err+="Complete Subject field\n";
    if(document.getElementById('friend_email').value == "")
	err+="Complete Friend Email field\n";
    if(document.getElementById('message').value == "")
	err+="Complete Message field\n";
    if(document.getElementById('name').value == "")
	err+="Complete Your Name field\n";
    if(document.getElementById('email').value == "")
	err+="Complete Your Email field\n";
    if(document.getElementById('code').value == "")
	err+="Complete Code field\n";
    if(echeck(document.getElementById('friend_email').value) == false)
	err+="Invalid Friend Email\n";
    if(echeck(document.getElementById('email').value) == false)
	err+="Your Email is Invalid\n";

    if (err != "")
    {
	alert(err);
	return false;
    }
    else
	return true;
}