function validate(what) {
    for (var i=0;i<what.sal.length;i++) {
        if (what.sal[i].checked)
            return true;
	    }
   alert('Please select salutation');
    return false;
	
}	

function formCheck() {
	var passed = false;
//	var emailID=document.form.email		
	with (document.form) {
		if (remail2.value == ""){
			alert("Please input e-mail address.");
			remail2.focus();
		}
		else if (echeck(remail2.value)==false){
			remail2.value="";
			remail2.focus();
		}
		else {	
			passed = true;
		}
	}
	return passed;
}


function formCheck2() {
	var passed = false;
//	var emailID=document.form.email		
	with (document.form2) {
		if (sender.value == ""){
			alert("Please input your first name.");
			sender.focus();
		}
		else if (sender_lname.value == ""){
			alert("Please input your last name.");
			sender_lname.focus();
		}
		else if (sender_company.value == ""){
			alert("Please input your company name.");
			sender_company.focus();
		}		
		else if (semail.value == ""){
			alert("Please input your e-mail address.");
			semail.focus();
		}	
		else if (echeck(semail.value)==false){
			semail.value="";
			semail.focus();
		}		
		else if (country_picked.value == ""){
			alert("Please select country.");
			country_picked.focus();
		}
		else {	
			passed = true;
		}
	}
	return passed;
}


function formCheck3() {
	var passed = false;
//	var emailID=document.form.email		
	with (document.form3) {
		if (sender.value == ""){
			alert("Please input your first name.");
			sender.focus();
		}
		else if (sender_lname.value == ""){
			alert("Please input your last name.");
			sender_lname.focus();
		}
		else if (semail.value == ""){
			alert("Please input your e-mail address.");
			semail.focus();
		}
		else if (echeck(semail.value)==false){
			semail.value="";
			semail.focus();
		}
		else if (receiver.value == ""){
			alert("Please input your friend's first name.");
			receiver.focus();
		}
		else if (receiver_lname.value == ""){
			alert("Please input your friend's last name.");
			receiver_lname.focus();
		}		
		else if (remail.value == ""){
			alert("Please input your friend's e-mail address.");
			remail.focus();
		}			
		else if (echeck(remail.value)==false){
			remail.value="";
			remail.focus();
		}
		else {	
			passed = true;
		}
	}
	return passed;
}



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("Please input a valid e-mail address.")
		   return false
		}

		if (str.indexOf(at)==-1 || str.indexOf(at)==0 || str.indexOf(at)==lstr){
		   alert("Invalid E-mail Address")
		   return false
		}

		if (str.indexOf(dot)==-1 || str.indexOf(dot)==0 || str.indexOf(dot)==lstr){
		    alert("Invalid E-mail Address")
		    return false
		}

		 if (str.indexOf(at,(lat+1))!=-1){
		    alert("Invalid E-mail Address")
		    return false
		 }

		 if (str.substring(lat-1,lat)==dot || str.substring(lat+1,lat+2)==dot){
		    alert("Invalid E-mail Address")
		    return false
		 }

		 if (str.indexOf(dot,(lat+2))==-1){
		    alert("Invalid E-mail Address")
		    return false
		 }
		
		 if (str.indexOf(" ")!=-1){
		    alert("Invalid E-mail Address")
		    return false
		 }

 		 return true					
}