var fejlecek=[
              'keresomedia_optiris.jpg',
              'keresomedia_schiller.jpg',
              'keresomedia_vista.jpg',
              'keresomedia_skoda.jpg',
              'keresomedia_gravirexpressz.jpg',
              'keresomedia_carbona.jpg',
              'keresomedia_europcar.jpg',
              ];


var prevpic=-1;

function loadfejlec()
{
	var a;
	if ((prevpic==-1)||(fejlecek.length==1)) {
		a=Math.round(Math.random()*(fejlecek.length-1));
	} else {
		do {
			a=Math.round(Math.random()*(fejlecek.length-1));
		} while (a==prevpic);				
	}
	prevpic=a;	
	document.getElementById('fejleckep').style.backgroundImage='url(header/'+fejlecek[a]+')';
	setTimeout('loadfejlec()',43000);
	//alert(a);	
}