function MM_swapImgRestore() { //v3.0
  var i,x,a=document.MM_sr; for(i=0;a&&i<a.length&&(x=a[i])&&x.oSrc;i++) x.src=x.oSrc;
}

function MM_preloadImages() { //v3.0
  var d=document; if(d.images){ if(!d.MM_p) d.MM_p=new Array();
    var i,j=d.MM_p.length,a=MM_preloadImages.arguments; for(i=0; i<a.length; i++)
    if (a[i].indexOf("#")!=0){ d.MM_p[j]=new Image; d.MM_p[j++].src=a[i];}}
}

function MM_findObj(n, d) { //v4.01
  var p,i,x;  if(!d) d=document; if((p=n.indexOf("?"))>0&&parent.frames.length) {
    d=parent.frames[n.substring(p+1)].document; n=n.substring(0,p);}
  if(!(x=d[n])&&d.all) x=d.all[n]; for (i=0;!x&&i<d.forms.length;i++) x=d.forms[i][n];
  for(i=0;!x&&d.layers&&i<d.layers.length;i++) x=MM_findObj(n,d.layers[i].document);
  if(!x && d.getElementById) x=d.getElementById(n); return x;
}

function MM_swapImage() { //v3.0
  var i,j=0,x,a=MM_swapImage.arguments; document.MM_sr=new Array; for(i=0;i<(a.length-2);i+=3)
   if ((x=MM_findObj(a[i]))!=null){document.MM_sr[j++]=x; if(!x.oSrc) x.oSrc=x.src; x.src=a[i+2];}
}

function MM_openBrWindow(theURL,winName,features) { //v2.0
  window.open(theURL,winName,features);
}

function MM_changeProp(objName,x,theProp,theValue) { //v6.0
  var obj = MM_findObj(objName);
  if (obj && (theProp.indexOf("style.")==-1 || obj.style)){
    if (theValue == true || theValue == false) {
      eval("obj."+theProp+"="+theValue);
	  alert(obj);
	}
    else eval("obj."+theProp+"='"+theValue+"'");
  }
}

function WD_changeProp(objName, x, theProp, theValue) {
	var obj = MM_findObj(objName);
	if (obj.style.visibility == 'visible'){
		MM_changeProp(objName, x, theProp, 'hidden');
	} else {
		MM_changeProp(objName, x, theProp, 'visible');
	}
}

function WD_changeChristian(family_member_id){
	
	var obj = MM_findObj('yearsaschristian[' + family_member_id + ']');
	var cobj = MM_findObj('christian[' + family_member_id + ']');
	obj.disabled = cobj.selectedIndex != 1;
	if (obj.disabled == true) obj.value=0;

}

function WD_selectLodge(registrant, mealid){
	var obj = MM_findObj('mealrow_' + registrant + "_" + mealid);
	var lobj = MM_findObj('lodge_' + registrant + "_" + mealid);
	var bobj = MM_findObj('breakfast_' + registrant + "_" + mealid);
	var luobj = MM_findObj('lunch_' + registrant + "_" + mealid);
	var dobj = MM_findObj('dinner_' + registrant + "_" + mealid);
	if (lobj)	lobj.checked = obj.checked;
	if (bobj) bobj.checked = obj.checked;
	if (luobj) luobj.checked = obj.checked;
	if (dobj) dobj.checked = obj.checked;

}

function WD_selectWorkshop(registrant){
	var obj = MM_findObj('congregation[' + registrant + ']');
	var value = obj.value;
	
	var ea1 = MM_findObj('English_Adult_' + registrant + '_1');
	var ey1 = MM_findObj('English_Youth_' + registrant + '_1');
	var ca1 = MM_findObj('Chinese_Adult_' + registrant + '_1');

	var ea2 = MM_findObj('English_Adult_' + registrant + '_2');
	var ey2 = MM_findObj('English_Youth_' + registrant + '_2');
	var ca2 = MM_findObj('Chinese_Adult_' + registrant + '_2');

	var pay = MM_findObj('PaymentSummary');

	if (ea1) ea1.style.display = 'none';
	if (ey1) ey1.style.display = 'none';
	if (ca1) ca1.style.display = 'none';

	if (ea2) ea2.style.display = 'none';
	if (ey2) ey2.style.display = 'none';
	if (ca2) ca2.style.display = 'none';

	if (pay) pay.style.display = 'none';

	var sel = MM_findObj(value + '_' + registrant + '_1');
	if (sel) sel.style.display = 'inline';
	sel = MM_findObj(value + '_' + registrant + '_2');
	if (sel) sel.style.display = 'inline';
}