// graffito Scripts
function changeHeaderPic(){
	var headerimages = new Array('img/biomassza/headerPic0.jpg','img/biomassza/headerPic1.jpg','img/biomassza/headerPic2.jpg','img/biomassza/headerPic3.jpg','img/biomassza/headerPic4.jpg');
	var hpic = parent.topFrame.document.getElementById('headerpic');
	var rannum = Math.floor(Math.random()*5);
	hpic.src = 	headerimages[rannum];
}

function changeHeaderPicSzig(){
	var headerimages = new Array('img/szigeteles/headerPic0.jpg','img/szigeteles/headerPic1.jpg','img/szigeteles/headerPic2.jpg','img/szigeteles/headerPic3.jpg');
	var hpic = parent.topFrame.document.getElementById('headerpic');
	var rannum = Math.floor(Math.random()*4);
	hpic.src = 	headerimages[rannum];
}