function picture_box_switch(nr) {
	idprefix = 'picture-';
	//alert(idprefix+nr);
	for (var i=1;i<=5;i++) {
		if (String(i)==String(nr)) {
			document.getElementById(idprefix+i).style.display = "block";
		} else {
		  if (document.getElementById(idprefix+i)) {
			   document.getElementById(idprefix+i).style.display = "none";
			}
		}
	}
}

function picture_box_switch_2(nr) {
	idprefix = 'picture-';
	//alert(idprefix+nr);
	for (var i=1;i<=5;i++) {
	  if (document.getElementById(idprefix+i)) {
      document.getElementById(idprefix+i).style.opacity = 0;
		  document.getElementById(idprefix+i).style.display = "none";
		}
	}

	for (var i=1;i<=5;i++) {
		if (String(i)==String(nr)) {
			document.getElementById(idprefix+i).style.display = "block";
			document.getElementById(idprefix+i).style.opacity = 0;
			for (var j=0;j<=100;j++) {
			  pausecomp(10);
      	document.getElementById(idprefix+i).style.opacity = j;
      }
		}
	}

}