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

This is a script from www.dhtmlgoodies.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.dhtmlgoodies.com
Alf Magne Kalleland

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

var dhtmlgoodies_slideSpeed = 10;	// Higher value = faster
var dhtmlgoodies_timer = 10;	// Lower value = faster

var objectIdToSlideDown = false;
var dhtmlgoodies_activeId = false;
var dhtmlgoodies_slideInProgress = false;
function showHideContent(e,inputId)
{
	var ph;
	var test1 = document.body.scrollHeight;
	var test2 = document.body.offsetHeight
	if (test1 > test2) // all but Explorer Mac
	{
		ph = document.body.scrollHeight;
	}
	else // Explorer Mac;
     	//would also work in Explorer 6 Strict, Mozilla and Safari
	{
		ph = document.body.offsetHeight;
	}
	scrollTo(0,ph);
	if(dhtmlgoodies_slideInProgress)return;
	dhtmlgoodies_slideInProgress = true;
	if(!inputId)inputId = this.id;
	inputId = inputId + '';
	var numericId = inputId.replace(/[^0-9]/g,'');
	var answerDiv = document.getElementById('dhtmlgoodies_a' + numericId);

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

function slideContent(inputId,direction)
{
	var obj =document.getElementById('dhtmlgoodies_a' + inputId);
	var contentObj = document.getElementById('dhtmlgoodies_ac' + 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 + ')',dhtmlgoodies_timer);
	}else{
		if(height<=1){
			obj.style.display='none'; 
			if(objectIdToSlideDown && objectIdToSlideDown!=inputId){
				document.getElementById('dhtmlgoodies_a' + objectIdToSlideDown).style.display='block';
				document.getElementById('dhtmlgoodies_a' + objectIdToSlideDown).style.visibility='visible';
				slideContent(objectIdToSlideDown,dhtmlgoodies_slideSpeed);				
			}else{
				dhtmlgoodies_slideInProgress = false;
			}
		}else{
			dhtmlgoodies_activeId = inputId;
			dhtmlgoodies_slideInProgress = false;
		}
	}
}



function initShowHideDivs()
{
	
	var ih;
	if (self.innerHeight) // all except Explorer
	{
		ih = self.innerHeight;
	}
	else if (document.documentElement && document.documentElement.clientHeight)
		// Explorer 6 Strict Mode
	{
		ih = document.documentElement.clientHeight;
	}
	else if (document.body) // other Explorers
	{
		ih = document.body.clientHeight;
	}

	var ph;
	var test1 = document.body.scrollHeight;
	var test2 = document.body.offsetHeight
	if (test1 > test2) // all but Explorer Mac
	{
		ph = document.body.scrollHeight;
	}
	else // Explorer Mac;
     	//would also work in Explorer 6 Strict, Mozilla and Safari
	{
		ph = document.body.offsetHeight;
	}
	if (ph>ih)
	{
		if (self.innerHeight) // all except Explorer
		{
			var startbottom = ((ph - ih) * -1) +50;
		}
		else if (document.documentElement && document.documentElement.clientHeight)
			// Explorer 6 Strict Mode
		{
			if (window.XMLHttpRequest) {
				// IE 7, mozilla, safari, opera 9
				var startbottom = ((ph - ih) * -1) +50;
			} else {
				// IE6, older browsers
				var startbottom = 50;
			}
		}
		else if (document.body) // other Explorers
		{
			if (window.XMLHttpRequest) {
				// IE 7, mozilla, safari, opera 9
				var startbottom = ((ph - ih) * -1) +50;
			} else {
				// IE6, older browsers
				var startbottom = 50;
			}
		}
	}
	else
	{
		var startbottom = (ih - ph) + 50;
	}
	var divs = document.getElementsByTagName('DIV');
	var divCounter = 1;
	for(var no=0;no<divs.length;no++){
		if(divs[no].className=='dhtmlgoodies_question'){
			divs[no].onclick = showHideContent;
			divs[no].id = 'dhtmlgoodies_q'+divCounter;
			var answer = divs[no].nextSibling;
			while(answer && answer.tagName!='DIV'){
				answer = answer.nextSibling;
			}
			answer.id = 'dhtmlgoodies_a'+divCounter;	
			contentDiv = answer.getElementsByTagName('DIV')[0];
			contentDiv.style.top = 0 - contentDiv.offsetHeight + 'px'; 	
			contentDiv.className='dhtmlgoodies_answer_content';
			contentDiv.id = 'dhtmlgoodies_ac' + divCounter;
			answer.style.display='none';
			answer.style.height='1px';
			answer.style.bottom = startbottom + "px";
			divCounter++;
		}		
	}	
}
window.onload = initShowHideDivs;