function submit1() 
             { 
               var sString=document.registrationform.email;
              
 var filter=/^(^[a-zA-Z][\w-]+(?:\.[\w-]+)*)@((?:[\w-]+\.)*\w[\w-]{0,66})\.([a-z]{2,3}(?:\.[a-z]{2})?)$/i; 
               if(sString.value=="" || sString.value=="Netfang")
               {
                 alert("Netfang er rangt!!!"); 
                 sString.focus();
                 sString.value="";
                 return false;
               }
               if(!filter.test(sString.value))
               {
                 alert("Netfang er rangt!!!"); 
                 sString.focus();
                 return false;
               }
             }