// JavaScript Document
function popupWindow(imgSrc) {

	var newImg = new Image();
	newImg.src = 'images/quiz/'+imgSrc;
	var height = newImg.height;
	var width = newImg.width;

	window.open('images/quiz/'+imgSrc, 'popup_image', 'resizable=1, status=1, scrollbars=1, height='+height+', width='+width);
	
}
function submit_btn() {
	document.getElementById('submit_btn').innerHTML = "<div style='background: #C2C2C2; padding: 5px; width: 100px; font-weight: bold;'>Submitting...</div>";
	document.ecg_quiz.submit();
}