var subpages = new Array();
var enablebuttons=true;

function gotoSubPage(direction,pagename,numitems){
	if(!subpages[pagename]){
		subpages[pagename] = new Array();
		subpages[pagename]['currentpage'] = 1;
		subpages[pagename]['numitems'] = numitems;
		subpages[pagename]['numpages'] = Math.ceil(numitems/1);
	}


	if(direction == "next"){
		if(subpages[pagename]['currentpage'] < subpages[pagename]['numpages'] && enablebuttons){
			subpages[pagename]['currentpage'] += 1;
			new Effect.MoveBy('itemstrip_'+pagename,0,-291);	
			enablebuttons = false;	
			var to = window.setTimeout(function() { enablebuttons=true;window.clearTimeout(to); }, 1000);	
		}
	}
	else{
		if(subpages[pagename]['currentpage'] != 1 && enablebuttons){
			subpages[pagename]['currentpage'] -= 1;
			new Effect.MoveBy('itemstrip_'+pagename,0,291);	
			enablebuttons = false;
			var to = window.setTimeout(function() { enablebuttons=true;window.clearTimeout(to); }, 1000);		
		}
	}
	//document.getElementById('pagenav_'+pagename).innerHTML = "pagina "+subpages[pagename]['currentpage']+" van "+subpages[pagename]['numpages'];
}