function runIntro() {

		switch (introState) {
			case 0:  preLoad( '02', 'herfst'); break;
			case 1:  changeBackground(getElementById_s('cell02'),'02',introSeason); preLoad( '11', introSeason); break;
			case 2:  changeBackground(getElementById_s('cell11'),'11',introSeason); preLoad( '22', introSeason); break;
			case 3:  changeBackground(getElementById_s('cell22'),'22',introSeason); preLoad( '10', introSeason); break;
			case 4:  changeBackground(getElementById_s('cell10'),'10',introSeason); preLoad( '20', introSeason); break;
			case 5:  changeBackground(getElementById_s('cell20'),'20',introSeason); preLoad( '21', introSeason); break;
			case 6:  changeBackground(getElementById_s('cell21'),'21',introSeason); preLoad( '01', introSeason); break;
			case 7:  changeBackground(getElementById_s('cell01'),'01',introSeason); preLoad( '23', introSeason); break;
			case 8:  changeBackground(getElementById_s('cell23'),'23',introSeason); preLoad( '00', introSeason); break;
			case 9:  changeBackground(getElementById_s('cell00'),'00',introSeason); preLoad( '12', introSeason); break;
			case 10: changeBackground(getElementById_s('cell12'),'12',introSeason); preLoad( '13', introSeason); break;
			case 11: changeBackground(getElementById_s('cell13'),'13',introSeason); break;
			case 13: window.location = '?page=introductie'; break;			
			default: ;
		}

		introState++;

		if (introState<14) {
			setTimeout ("runIntro()", 1000);
		}

	}

	function changeBackground(object, cell, type) {
		//object.background = '/png/'+cell+'_'+type+'.png';
		object.style.backgroundImage = 'url(/png/'+cell+'_'+type+'.png)';
	}

	function getElementById_s(id){
		var obj = null;
		if(document.getElementById){
			obj = document.getElementById(id);
		}else if(document.all){
			obj = document.all[id];
		}
		return obj;
	}


	function preLoad( cell, type) {

		tempImage = new Image();
		tempImage.src = '/png/'+cell+'_'+type+'.png';

	}



	function preLoadButtons() {
	
		preLoad( '00', 'introductie');
		preLoad( '01', 'pensioenplanning');
		preLoad( '02', 'financieleplanning');
		preLoad( '10', 'pensioentraining');
		preLoad( '20', 'contact');

	}