function toggleBox(szDivID, iState){ // 1 visible, 0 hidden
   	if(document.layers){ //NN4+
      		document.layers[szDivID].display = iState ? "block" : "none";
   	}else if(document.getElementById){ //gecko(NN6) + IE 5+
   		var obj = document.getElementById(szDivID);
       	obj.style.display = iState ? "block" : "none";
  	 	}else if(document.all){	//IE 4
   		document.all[szDivID].style.display = iState ? "block" : "none";
   	}
}
function ckall(parent, pre, amount){
	var test = document.getElementById(parent).checked;
	for(var i=1; i<= amount; i++){
		var ele = pre+'_'+i;
		if(test)
			document.getElementById(ele).checked = true;
		else
			document.getElementById(ele).checked = false;
	}
}
function moveBox(e, divId) {
	var posx = 0;
	var posy = 0;
	if (!e) var e = window.event;
	
	if (e.pageX || e.pageY){
		posx = e.pageX;
		posy = e.pageY;
	}else if (e.clientX || e.clientY){
		posx = e.clientX + document.body.scrollLeft + document.documentElement.scrollLeft;
		posy = e.clientY + document.body.scrollTop + document.documentElement.scrollTop;
	}
	document.getElementById(divId).style.left = posx + 10 + 'px';
	document.getElementById(divId).style.top = posy + 'px';
}
function changeMessage(iMessage, divId) {
	var message = new Array();
	message[0]='Header +++ Detail';
	var parts = new Array();
	parts = message[iMessage].split(' +++ ');
	mTitle = parts[0]; mBody = parts[1];
	var content = '<h1>Message</h1><h2>' + mTitle + ':</h2><p>' + mBody + '</p>';
	document.getElementById(divId).innerHTML = content;
	toggleBox(divId, 1);
}

var inival=1; // Initialise starting element number
function addTextBoxRow()
{
	var newArea = add_New_Element();
	var htcontents = "<table><tr><td><input type='radio' name='is_selected_answer'  value=\""+(inival-1)+"\"/> Answer #"+inival+"</td><td><input type='text' name='textbxAnswer[]' size='50' maxlength='255' /></td></tr></table>";
	document.getElementById(newArea).innerHTML = htcontents; 
}
function deleteTextBoxRow()
{
  if(inival>1)
  {
	  var d = document.getElementById('areaAnswer');
	  var olddiv = document.getElementById('my' + inival + 'Div');
	  d.removeChild(olddiv);
	  inival = inival - 1;
  }
}
function setintval(num)
{
	inival=num;
}
function add_New_Element() 
{
	inival=inival+1; 
	var ni = document.getElementById('areaAnswer');
	var newdiv = document.createElement('div'); 
	var divIdName = 'my'+inival+'Div';
	newdiv.setAttribute('id',divIdName);
	ni.appendChild(newdiv);
	return divIdName;
}
function checkTextAreaLength(control, maximum,title) 
{
	var length = control.value.length;
	if (length > maximum) 
	{
		control.value=control.value.substring(0,maximum);
		alert("Field : " + title + '\nPlease limit your text to ' + maximum +' characters. There are currently ' + length + '.');
		control.focus();
	}
}
function checkInputLength(control, maximum,title) 
{
	var length = control.value.length;
	if (length==0) 
	{
		control.focus();
		return "\nField : " + title + ' is a required field.'; 
	}
	return '';
}