function checkform()
 { var message="Please Enter ";
   var x=0;
   if (document.dataform.Name.value=="")
      { message=message+ "Name,";
      x=1;}
       if (document.dataform.realname.value=="")
      { message=message+" E-mail,";
       x=1;}
       var a
       a=".";
       var b1
         b1="@"
                  
       if((document.dataform.realname.value.indexOf(a,0)==-1)||(document.dataform.realname.value.indexOf(b1,0)==-1)){
         message=message+ "Valid E-Mail,";
         x=1;}
           
       if (document.dataform.Country.value=="")
       {message=message+ " Country,";
        x=1;}
        
         if (document.dataform.Adults.value=="")
       {message=message+ "Adults,";
        x=1;}
        
             
        if (x==1)
      { alert(message);
       return false;}
       else
       return true;
       }