// JavaScript Document
var win= null;
function NewWindow(mypage,myname,w,h,scroll){
	var winl = (screen.width-w)/2;
	var wint = (screen.height-h)/2;
	var settings ='height='+h+',';
	settings +='width='+w+',';
	settings +='top='+wint+',';
	settings +='left='+winl+',';
	settings +='scrollbars='+scroll+',';
	settings +='resizable=yes';
	win=window.open(mypage,myname,settings);
}
var freeItemCount1=0;
var maxFreeItems1=1; 
function setItems1(item){
  if(item.checked){freeItemCount1=freeItemCount1+1}
	else{freeItemCount1=freeItemCount1-1} 
	if (freeItemCount1>maxFreeItems1){
		item.checked=false 
  	freeItemCount1=freeItemCount1-1 
  	alert('You may only choose '+maxFreeItems1+' session. Please choose the '+maxFreeItems1+' session you wish to participate in.') 
  }
}
var freeItemCount2=0;
var maxFreeItems2=2; 
function setItems2(item){
  if(item.checked){freeItemCount2=freeItemCount2+1}
	else{freeItemCount2=freeItemCount2-1} 
	if (freeItemCount2>maxFreeItems2){
		item.checked=false 
  	freeItemCount2=freeItemCount2-1 
  	alert('You may only choose '+maxFreeItems2+' sessions. Please choose the '+maxFreeItems2+' sessions you wish to participate in.') 
  }
}