function showhide(id) {
	if(document.getElementById(id).style.display=='block') {
		document.getElementById(id).style.display='none';
	} else {
		document.getElementById(id).style.display='block';
	}
}

function show_hide(id) {
	if(document.getElementById(id).style.display=='block') {
		document.getElementById(id).style.display = 'none';
		document.getElementById('arrow_'+id).src = 'img/arrow_right.gif';
	} else {
		document.getElementById(id).style.display = 'block';
		document.getElementById('arrow_'+id).src = 'img/arrow_down.gif';
	}
}

if (document.images) {
   img1 = new Image();
   img1.src = 'img/arrow_right.gif';
}

function full_description(id){
	description_teaser = document.getElementById('description_teaser_'+id);
	description_full   = document.getElementById('description_full_'+id);
	
	if(description_full.style.display == 'block'){
		description_teaser.style.display = 'block';
		description_full.style.display = 'none';
	}else{
		description_teaser.style.display = 'none';
		description_full.style.display = 'block';
	}
}

//function popup_payper(){
//	window.open('http://www.payper.nl/site/popup/index.html','payper_popup','width=700,height=400,scrollbars=no,toolbar=no,location=no');
//}