function validfriend(){
	if(document.frmtellfriend.sendername.value == ""){
		alert('Please enter Your Name');
		document.frmtellfriend.sendername.focus();
		return false;
	
	}else if(document.frmtellfriend.senderemail.value == ""){
		alert('Please enter Your Email');
		document.frmtellfriend.senderemail.focus();
		return false;
		
	}else if(isEmailAddr(document.frmtellfriend.senderemail.value)==false) {
		alert("Please enter valid Email Address");
		document.frmtellfriend.senderemail.focus();
		return false;
	
	}else if(document.frmtellfriend.message.value == ""){
		alert('Please enter Your message');
		document.frmtellfriend.message.focus();
		return false;
	
	}else if(document.frmtellfriend.friendemail1.value == "" && document.frmtellfriend.friendemail2.value=="" && document.frmtellfriend.friendemail3.value==""){
		alert("Please enter atleast one Friends Email Address");
		document.frmtellfriend.friendemail1.focus();
		return false;
	}
	
	for(i=1;i<=3;i++)
	{
		if(i==1) { mail_id = document.frmtellfriend.friendemail1.value; f = document.frmtellfriend.friendemail1; }
		if(i==2) { mail_id = document.frmtellfriend.friendemail2.value; f = document.frmtellfriend.friendemail2; }
		if(i==3) { mail_id = document.frmtellfriend.friendemail3.value; f = document.frmtellfriend.friendemail3; }

		if(mail_id!=""){
				if(isEmailAddr(mail_id)==false){
					alert("Please enter valid Friend Email Address");
					f.focus();
					return false;
				}	
			}	
	}	

    return true;
}