function reco(){
	var f=document.recommendus;
	
	var you=f.yourname.value;
	var vl1=new RegExp("^[a-z][a-zA-Z0-9_. ]+$","ig");
	if(f.yourname.value=="")
	{
      alert("Please Enter Your Name."); 
	  f.yourname.select();
     return false;    
   }
   if(!you.match(vl1))
   {
     alert("Name not acceptable! Please use characters ranging from (a-z)(A-Z)(0-9)( ._) and login name should start with a character."); 
   f.yourname.select();
     return false;    
   }
   var email=f.email.value;
var len=email.length;
var email_re=new RegExp("^[a-z][a-z0-9._@]+$","g");

if(!email.match(email_re)){
alert("Please enter your E-mail ID");
f.email.select();
return false;
}
var count=0;
for(var i=0;i<=len;i++){
if(email.charAt(i)=="@"){
count++;
}
}
if((count==0) || (count>=2)){
alert("Please enter a valid E-mail ID");
f.email.select();
return false;
}


   
var you1=f.friendsname1.value;
if(f.friendsname1.value=="")
	{
      alert("Please Enter Your Friends Name."); 
	  f.friendsname1.select();
     return false;    
   }
   if(!you1.match(vl1))
   {
     alert("Friends Name not acceptable! Please use characters ranging from (a-z)(A-Z)(0-9)( ._) and login name should start with a character."); 
   f.yourname.select();
     return false;    
   }

   var emailx=f.email1.value;
var len=emailx.length;
var emailx_re=new RegExp("^[a-z][a-z1-9._@]+$","g");

if(!emailx.match(emailx_re)){
alert("Please enter your Friends E-mail ID");
f.email1.select();
return false;
}
var count=0;
for(var i=0;i<=len;i++){
if(emailx.charAt(i)=="@"){
count++;
}
}
if((count==0) || (count>=2)){
alert("Enter A VALID E-MAIL ID")
f.email1.select();
return false;
} 
	


   var you2=f.friendsname2.value;
if(!f.friendsname2.value=="" && !you2.match(vl1))
	{
     alert("It is not a Valid Friends name . Friends Name  can contain character(a-z)(A-Z)(0-9)( _.)"); 
	  f.friendsname2.select();
     return false;    
   }
   var emaily=f.email2.value;
var len=emaily.length;
var emaily_re=new RegExp("^[a-z][a-z1-9._@]+$","g");
if(f.email2.value!="")
	{
if(!emaily.match(emaily_re)){
alert("Enter YOUR E-MAILID");
f.email2.select();
return false;
}
var count=0;
for(var i=0;i<=len;i++){
if(emaily.charAt(i)=="@"){
count++;
}
}
if((count==0) || (count>=2)){
alert("Enter A VALID E-MAIL ID")
f.email2.select();
return false;
} 
	}	
   var you3=f.friendsname3.value;
if(!f.friendsname3.value=="" && !you3.match(vl1))
	{
     alert("It is not a Valid Friends name . Friends Name  can contain character(a-z)(A-Z)(0-9)( _.)"); 
	  f.friendsname3.select();
     return false;    
   }

   var emailz=f.email3.value;
var len=emailz.length;
var emailz_re=new RegExp("^[a-z][a-z1-9._@]+$","g");
if(f.email3.value!="")
	{
if(!emailz.match(emailz_re)){
alert("Enter YOUR E-MAILID");
f.email3.select();
return false;
}
var count=0;
for(var i=0;i<=len;i++){
if(emailz.charAt(i)=="@"){
count++;
}
}
if((count==0) || (count>=2)){
alert("Enter A VALID E-MAIL ID")
f.email3.select();
return false;
} 
	}	
   var you4=f.friendsname4.value;
if(!f.friendsname4.value=="" && !you4.match(vl1))
	{
     alert("It is not a Valid Friends name . Friends Name  can contain character(a-z)(A-Z)(0-9)( _.)"); 
	  f.friendsname4.select();
     return false;    
   }

   var emailo=f.email4.value;
var len=emailo.length;
var emailo_re=new RegExp("^[a-z][a-z1-9._@]+$","g");
if(f.email4.value!="")
	{
if(!emailo.match(emailo_re)){
alert("Enter YOUR E-MAILID");
f.email4.select();
return false;
}
var count=0;
for(var i=0;i<=len;i++){
if(emailo.charAt(i)=="@"){
count++;
}
}
if((count==0) || (count>=2)){
alert("Enter A VALID E-MAIL ID")
f.email4.select();
return false;
} 
	}	
   var you5=f.friendsname5.value;
if(!f.friendsname5.value=="" && !you5.match(vl1))
	{
     alert("It is not a Valid Friends name . Friends Name  can contain character(a-z)(A-Z)(0-9)( _.)"); 
	  f.friendsname5.select();
     return false;    
   }
var emailp=f.email5.value;
var len=emailp.length;
var emailp_re=new RegExp("^[a-z][a-z1-9._@]+$","g");
if(f.email5.value!="")
	{
if(!emailp.match(emailp_re)){
alert("Enter YOUR E-MAILID");
f.email5.select();
return false;
}
var count=0;
for(var i=0;i<=len;i++){
if(emailp.charAt(i)=="@"){
count++;
}
}
if((count==0) || (count>=2)){
alert("Enter A VALID E-MAIL ID")
f.email5.select();
return false;
} 
	}	

   return true;
}