/************************************************************************************************************
(C) www.MB.com, November 2005

This is a script from www.MB.com. You will find this and a lot of other scripts at our website.	

Terms of use:
You are free to use this script as long as the copyright message is kept intact. However, you may not
redistribute, sell or repost it without our permission.

Thank you!

www.MB.com
Alf Magne Kalleland

************************************************************************************************************/

var MB_slideSpeed = 4;	// Higher value = faster
var MB_timer = 10;	// Lower value = faster

var objectIdToSlideDown = false;
var MB_activeId = false;
var MB_slideInProgress = false;
function showHideContent(e,inputId)
{
	if(MB_slideInProgress)return;
	MB_slideInProgress = true;
	if(!inputId)inputId = this.id;
	inputId = inputId + '';
	var numericId = inputId.replace(/[^0-9]/g,'');
	var answerDiv = document.getElementById('MB_a' + numericId);
	
	objectIdToSlideDown = false;
	
	if(!answerDiv.style.display || answerDiv.style.display=='none'){		
		if(MB_activeId &&  MB_activeId!=numericId){			
			objectIdToSlideDown = numericId;
			slideContent(MB_activeId,(MB_slideSpeed*-1));
			
		}else{
			
			answerDiv.style.display='block';
			answerDiv.style.visibility = 'visible';
			
			slideContent(numericId,MB_slideSpeed);
		}
	}else{
		slideContent(numericId,(MB_slideSpeed*-1));
		MB_activeId = false;
	}	
}

function slideContent(inputId,direction)
{
	
	var obj =document.getElementById('MB_a' + inputId);
	var contentObj = document.getElementById('MB_ac' + inputId);
	document.getElementById('MB_q'+ inputId).style.backgroundImage = 'url(/afbeeldingen/harmonica-neer.png)';
	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 + ')',MB_timer);
		
	}else{
		if(height<=1){
			obj.style.display='none'; 
			document.getElementById('MB_q'+ inputId).style.backgroundImage = 'url(/afbeeldingen/harmonica.png)';
			if(objectIdToSlideDown && objectIdToSlideDown!=inputId){
				document.getElementById('MB_a' + objectIdToSlideDown).style.display='block';
				document.getElementById('MB_a' + objectIdToSlideDown).style.visibility='visible';
				
				slideContent(objectIdToSlideDown,MB_slideSpeed);				
			}else{
				MB_slideInProgress = false;
				//document.getElementById('MB_q'+ inputId).style.backgroundImage = 'url(/afbeeldingen/harmonica-neer.png)';
			}
		}else{
			MB_activeId = inputId;
			MB_slideInProgress = false;
		}
	}
}

function initShowHideDivs()
{
	var divs = document.getElementsByTagName('DIV');
	var divCounter = 1;
	for(var no=0;no<divs.length;no++){
		if(divs[no].className=='MB_question'){
			divs[no].onclick = showHideContent;
			
			//divs[no].style.backgroundImage = "url(/afbeeldingen/harmonica-neer.png)";
			divs[no].id = 'MB_q'+divCounter;
			var answer = divs[no].nextSibling;
			while(answer && answer.tagName!='DIV'){
				answer = answer.nextSibling;
			}
			answer.id = 'MB_a'+divCounter;	
			contentDiv = answer.getElementsByTagName('DIV')[0];
			contentDiv.style.top = 0 - contentDiv.offsetHeight + 'px'; 	
			contentDiv.className='MB_answer_content';
			contentDiv.id = 'MB_ac' + divCounter;
			answer.style.display='none';
			answer.style.height='1px';
			divCounter++;
		}		
	}	
}

//script voor referentie pagina.
var MBREF_slideSpeed = 6;	// Higher value = faster
var MBREF_timer = 2;	// Lower value = faster

//var objectIdToSlideDown = false;
var MBREF_activeId = false;
var MBREF_slideInProgress = false;
function MBREF_showHideContent(e,inputId)
{
	if(MBREF_slideInProgress)return;
	MBREF_slideInProgress = true;
	if(!inputId)inputId = this.id;
	inputId = inputId + '';
	var numericId = inputId.replace(/[^0-9]/g,'');
	var answerDiv = document.getElementById('MBREF_a' + numericId);

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

function MBREFslidecontent(inputId,direction)
{
	
	var obj =document.getElementById('MBREF_a' + inputId);
	var contentObj = document.getElementById('MBREF_ac' + inputId);
	document.getElementById('MBREF_q'+ inputId).style.backgroundImage = 'url(/afbeeldingen/harmonica_ref-neer.png)';
	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('MBREFslidecontent(' + inputId + ',' + direction + ')',MBREF_timer);
	}else{
		if(height<=1){
			obj.style.display='none'; 
			document.getElementById('MBREF_q'+ inputId).style.backgroundImage = 'url(/afbeeldingen/harmonica_ref.png)';
			if(objectIdToSlideDown && objectIdToSlideDown!=inputId){
				document.getElementById('MBREF_a' + objectIdToSlideDown).style.display='block';
				document.getElementById('MBREF_a' + objectIdToSlideDown).style.visibility='visible';
				
				MBREFslidecontent(objectIdToSlideDown,MBREF_slideSpeed);				
			}else{
				MBREF_slideInProgress = false;
			}
		}else{
			MBREF_activeId = inputId;
			MBREF_slideInProgress = false;
		}
	}
}



function MBREF_initShowHideDivs()
{
	var divs = document.getElementsByTagName('DIV');
	var divCounter = 1;
	for(var no=0;no<divs.length;no++){
		if(divs[no].className=='MBREF_question'){
			divs[no].onclick = MBREF_showHideContent;
			divs[no].id = 'MBREF_q'+divCounter;
			var answer = divs[no].nextSibling;
			while(answer && answer.tagName!='DIV'){
				answer = answer.nextSibling;
			}
			answer.id = 'MBREF_a'+divCounter;	
			contentDiv = answer.getElementsByTagName('DIV')[0];
			contentDiv.style.top = 0 - contentDiv.offsetHeight + 'px'; 	
			contentDiv.className='MBREF_answer_content';
			contentDiv.id = 'MBREF_ac' + divCounter;
			answer.style.display='none';
			answer.style.height='1px';
			divCounter++;
		}		
	}	
}