var slideSpeed	= 50;	// Higher value = faster
var stimer		= 1;	// Lower  value = faster

var objectIdToSlideDown	= false;
var activeId			= false;
var slideInProgress		= false;

function showHideContent(e,inputId)
{
	if (slideInProgress) return;
	slideInProgress = true;
	if (!inputId) inputId = this.id;
	inputId = inputId + '';
	var numericId = inputId.replace(/[^0-9]/g,'');
	var answerDiv = document.getElementById('section_b' + numericId);

	objectIdToSlideDown = false;
	
	if (!answerDiv.style.display || answerDiv.style.display=='none') {		
		if (activeId &&  activeId!=numericId) {
			objectIdToSlideDown = numericId;
			slideContent(activeId,(slideSpeed*-1));
		} else {
			answerDiv.style.display='block';
			answerDiv.style.visibility = 'visible';
			
			slideContent(numericId,slideSpeed);
		}
	} else {
		slideContent(numericId,(slideSpeed*-1));
		activeId = false;
	}	
}

function slideContent(inputId,direction)
{
	var obj			= document.getElementById('section_b'  + inputId);
	var contentObj	= document.getElementById('section_bc' + inputId);
	height = obj.clientHeight;
	if (height==0) height = obj.offsetHeight;
	height = height + direction;
	rerunFunction = true;
	if (height>contentObj.offsetHeight) {
		height = contentObj.offsetHeight;
		rerunFunction = false;
	}
	if (height<=1) {
		height = 1;
		rerunFunction = false;
	}

	obj.style.height = height + 'px';
	var topPos = height - contentObj.offsetHeight;
	if (topPos>0) topPos=0;
	contentObj.style.top = topPos + 'px';

	if (rerunFunction) {
		setTimeout('slideContent(' + inputId + ',' + direction + ')',stimer);
	} else {
		if (height<=1) {
			obj.style.display='none'; 
			if(objectIdToSlideDown && objectIdToSlideDown!=inputId){
				document.getElementById('section_b' + objectIdToSlideDown).style.display='block';
				document.getElementById('section_b' + objectIdToSlideDown).style.visibility='visible';
				slideContent(objectIdToSlideDown,slideSpeed);				
			} else {
				slideInProgress = false;
			}
		} else {
			activeId = inputId;
			slideInProgress = false;
		}
	}
}


function initShowHideDivs()
{
	var divs = document.getElementsByTagName('DIV');
	var divCounter = 1;
	for (var no=0;no<divs.length;no++) {
		if (divs[no].className=='section_head') {
			divs[no].onclick = showHideContent;
			divs[no].id = 'section_h'+divCounter;
			var answer = divs[no].nextSibling;
			while (answer && answer.tagName!='DIV') {
				answer = answer.nextSibling;
			}
			answer.id = 'section_b'+divCounter;	
			contentDiv = answer.getElementsByTagName('DIV')[0];
			contentDiv.style.top = 0 - contentDiv.offsetHeight + 'px'; 	
			contentDiv.className='section_body_content';
			contentDiv.id = 'section_bc' + divCounter;
			answer.style.display='none';
			answer.style.height='1px';
			divCounter++;
		}		
	}	
}
window.onload = initShowHideDivs;