function loadContent(file) {
	var head = document.getElementsByTagName('head').item(0);
	var scriptTag = document.getElementById('loadScript');
	if(scriptTag) { head.removeChild(scriptTag); }
	script = document.createElement('script');
	script.src = file;
	script.type = 'text/javascript';
	script.id = 'loadScript';
	head.appendChild(script);
}
function chgcolortext(obj,color) {
	obj.style.color = color;
}
function clickAnswers(id) {
	document.getElementById('ansques_'+id).style.display='none';
	if (document.getElementById('answers_'+id).style.display == '') {
		document.getElementById('answers_'+id).style.display='none';
	} else {
		document.getElementById('answers_'+id).style.display='';
	}
}
function clickAnsQues(id) {
	document.getElementById('answers_'+id).style.display='none';
	if (document.getElementById('ansques_'+id).style.display == '') {
		document.getElementById('ansques_'+id).style.display='none';
	} else {
		document.getElementById('ansques_'+id).style.display='';
	}
}
function onImgError(source) {
	source.src = "/images/default_person.jpg";
	// disable onerror to prevent endless loop
	source.onerror = "";
	return true;
}