function validCheck()
{
	if(document.refer_friend.email1.value.length == 0)
	{
			alert("Please fill first email address");
			document.refer_friend.email1.focus();
			return false;
	}
	else if((document.refer_friend.email1.value.indexOf("@")==-1) || (document.refer_friend.email1.value.indexOf(".")==-1) || (document.refer_friend.email1.value.length<=5) )
	{
			alert("Invalid Email Address");
			document.refer_friend.email1.focus();
			return false;
	}
 else if(document.refer_friend.email2.value.length >0)
	{
		if((document.refer_friend.email2.value.indexOf("@")==-1) || (document.refer_friend.email2.value.indexOf(".")==-1) || (document.refer_friend.email2.value.length<=5) )
	{
		alert("Invalid Email Address");
			document.refer_friend.email2.focus();
			return false;
	}
	}
 else if(document.refer_friend.email3.value.length>0)
	{
		if((document.refer_friend.email3.value.indexOf("@")==-1) || (document.refer_friend.email3.value.indexOf(".")==-1) || (document.refer_friend.email3.value.length<=5) )
	{
		alert("Invalid Email Address");

			document.refer_friend.email3.focus();
			return false;
	}
	}

else if(document.refer_friend.email4.value.length>0)
	{
		if((document.refer_friend.email4.value.indexOf("@")==-1) || (document.refer_friend.email4.value.indexOf(".")==-1) || (document.refer_friend.email4.value.length<=5) )
	{
		alert("Invalid Email Address");

			document.refer_friend.email4.focus();
			return false;
	}
	}

 else if(document.refer_friend.email5.value.length>0)
	{
		if((document.refer_friend.email5.value.indexOf("@")==-1) || (document.refer_friend.email5.value.indexOf(".")==-1) || (document.refer_friend.email5.value.length<=5) )
	{
		alert("Invalid Email Address");

			document.refer_friend.email5.focus();
			return false;
	}
	}

else if(document.refer_friend.vfromemail.value.length<=0)
	{
		alert("Please fill your email address");
		document.refer_friend.vfromemail.focus();
		return false;
	}
else if((document.refer_friend.vfromemail.value.indexOf("@")==-1) || (document.refer_friend.vfromemail.value.indexOf(".")==-1) || (document.refer_friend.vfromemail.value.length<=5) )
	{
		alert("Invalid Email Address");

			document.refer_friend.vfromemail.focus();
			return false;
	}
	
}