function validate_tellafriend(tellafriend)

{
  with (document.tellafriend)

	{



   if(tellafriend.name1.value=='')

		{

		         alert(" Please Enter Your Name ");

			      tellafriend.name1.focus();

				  return false;

	     }
if(tellafriend.email1.value=='')

		{

		         alert(" Please Enter Your Email ");

			      tellafriend.email1.focus();

				  return false;

	     }

		 

 else if(isEMail(tellafriend.email1.value))

		{

		         alert(" Please Enter Your Valid Email ");

			      tellafriend.email1.focus();

				  return false;

	     }
		 
		  if(tellafriend.name2.value=='')

		{

		         alert(" Please Enter Your Friend Name ");

			      tellafriend.name2.focus();

				  return false;

	     }
if(tellafriend.email2.value=='')

		{

		         alert("Please Enter Your Friend Email ");

			      tellafriend.email2.focus();

				  return false;

	     }

		 

 else if(isEMail(tellafriend.email2.value))

		{

		         alert(" Please Enter Your Friend Valid Email ");

			      tellafriend.email2.focus();

				  return false;

	     }
 	
         if(tellafriend.message.value=='')

		{

		         alert(" Please Enter Your Message.");

			      tellafriend.message.focus();

				  return false;

	     }
		}
		return true;
}



function isEMail(s)

	{

		if(((s.indexOf("@"))==-1) || ((s.indexOf("."))==-1))

		{

			return true ;  

		}else{

			var x=s;

			var ctr=0;

			var dot=0;

			for(j=0;j<x.length;j++)

			{

				if(x.charAt(j)=="@"){

					ctr++;

				}

				if(x.charAt(j)=="."){

					dot++;

				}

			}

			if(ctr!=1){

				return true;

			}else{

				return false;

			}

		}

	}