function closeAll(group) {
	set = setSet(group); // defined in text file
	for (var i in set) {
		document.getElementById(set[i]).style.display="none";
	}
}

function openUp(group,section,file) {
	if (document.getElementById(section).style.display == "block") {
		location.assign(file);
	}
	else {
		closeAll(group);
		document.getElementById(section).style.display="block";
	}
	return false;
}

function changePic(image) {
	document["main"].src = image;
	return false;
}

function validateForm()
{
var x=document.forms["form"]["fromemail"].value;
var emailPattern = /^[a-zA-Z0-9._-]+@[a-zA-Z0-9.-]+\.[a-zA-Z]{2,4}$/;
if (!emailPattern.test(x))
  {
  alert("Please enter a valid email address");
  return false;
  }
}