var href;
function showBlackHole(){
 var obj = document.getElementById("hole").style;
 obj.position = 'absolute';
 obj.top = Math.round((document.body.clientHeight - document.imgHole.height)/2);
 obj.left = Math.round((document.body.clientWidth - document.imgHole.width)/2);
 obj.visibility = 'visible';
}

function fitToScreen(){
 var obj = document.getElementById("doc").style;
 obj.position = 'absolute';
 obj.top = 0;
 obj.height = document.body.clientHeight;
 obj.width = document.body.clientWidth;
 obj.overflow = 'hidden';
}

function initImplode(){
 if ((!document.all) || (!document.getElementById)){
 document.location.href = href;
 return;
 }
 showBlackHole();
 fitToScreen();
 var docdiv = document.getElementById("doc").style;
 x1 = parseInt(docdiv.left);
 y1 = parseInt(docdiv.top);
 x2 = x1 + docdiv.width;
 y2 = y1;
 x3 = x2;
 y3 = y1 + docdiv.height;
 x4 = x1;
 y4 = y3;
 imgdiv = document.getElementById("hole").style;
 a1 = parseInt(imgdiv.left);
 b1 = parseInt(imgdiv.top);
 a2 = a1 + document.imgHole.width;
 b2 = b1;
 a3 = a2;
 b3 = b2 + document.imgHole.height;
 a4 = a1;
 b4 = b3;
 oldWidth = parseInt(docdiv.width);
 oldHeight = parseInt(docdiv.height);
 blackTimer = null;
 i = x1 + 1;
 implode();
}

function implode(){
 var obj = document.getElementById("doc").style;
 if ((parseInt(obj.left) >= a1+Math.ceil(parseInt(document.getElementById('imgHole').height) / 2)) || (parseInt(obj.top) >= b1+Math.ceil(parseInt(document.getElementById('imgHole').width) / 2))){
  obj.top = b1 + Math.ceil(parseInt(document.getElementById('imgHole').width) / 2);
  obj.left = a1 + Math.ceil(parseInt(document.getElementById('imgHole').height) / 2);
  obj.width = 0;
  obj.height = 0;
  stop();
  return;
 }
 obj.left = i;
 try{
 obj.width = oldWidth - 2*i;
 }
 catch(e){}
 var j = Math.round(((y1-b1)/(x1-a1))*i);
 obj.top = j;
 try{
 obj.height = oldHeight - 2*j;
 }
 catch(e){}
 i+=10;
 blackTimer = window.setTimeout("implode()", 1);
}

function stop(){
 window.clearTimeout(blackTimer);
 document.location.href = href;
}

function hyperlink(ref){
 href = ref;
 initImplode();
}
-->
</script>

Vjekoslav Begovic

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