//----------------------------------------------------- add event listerners
function emaillist(){
	if(!window.popwin){
		popwin = window.open('guestreg.php','guestreg','width=500,height=380');
		popwin.blur();
		window.focus();
		}
	}
function emaillist2(){
	if(!window.popwin){
		popwin = window.open('guestreg.php','guestreg','width=500,height=380');
		popwin.blur();
		window.focus();
		}
	}	

   // Function to add event listener to a2  
   function popup1() {   
     var e1 = document.getElementById("a2");   
     e1.addEventListener("click", emaillist, false);   
   }
   // Function to add event listener to a3  
   function popup2() {   
     var e2 = document.getElementById("a3");   
     e2.addEventListener("click", emaillist2, false);   
   }   
   
//------------------------------------------------------------- attach event
document.addEventListener("DOMContentLoaded", popup1, false); 
document.addEventListener("DOMContentLoaded", popup2, false);