function visible(obj) {
 $('#'+obj).animate({opacity: "show"}, "slow"); 
 setTimeout(function() { hidden(obj) }, 5000);
}

function hidden(obj) {
 $('#'+obj).animate({opacity: "hide"}, "slow"); 
}

// galerie

var img1 = 1;
var img2 = 2;
var img3 = 3;
var img4 = 4;
var img5 = 5;
var imgsrc = new Array();

function imgsrcf(src2) {
 imgsrc.push(src2);
 document.getElementById('img1').src=imgsrc[img1];
 document.getElementById('img2').src=imgsrc[img2];
 document.getElementById('img3').src=imgsrc[img3];
 document.getElementById('img4').src=imgsrc[img4];
 document.getElementById('img5').src=imgsrc[img5];
 document.getElementById('preview').src=imgsrc[img1];
}

function previous() {
 if (img1 > 1) {
  img1--;
  img2--;
  img3--;
  img4--;
  img5--;
  document.getElementById('img1').src=imgsrc[img1];
  document.getElementById('img2').src=imgsrc[img2];
  document.getElementById('img3').src=imgsrc[img3];
  document.getElementById('img4').src=imgsrc[img4];
  document.getElementById('img5').src=imgsrc[img5];
  document.getElementById('preview').src=imgsrc[img1];
 }
}

function next() {
 if (img5 < number) {
  img1++;
  img2++;
  img3++;
  img4++;
  img5++;
  document.getElementById('img1').src=imgsrc[img1];
  document.getElementById('img2').src=imgsrc[img2];
  document.getElementById('img3').src=imgsrc[img3];
  document.getElementById('img4').src=imgsrc[img4];
  document.getElementById('img5').src=imgsrc[img5];
  document.getElementById('preview').src=imgsrc[img1];
 }
}

function preview(src2) {
 document.getElementById('preview').src=src2;
}