diff --git a/index.html b/index.html
index 5233f96..30671a1 100644
--- a/index.html
+++ b/index.html
@@ -34,6 +34,8 @@
         var poisson = poissons[poissons.length-1]
         poisson.style.top = coord_map.top;
         poisson.style.left = coord_map.left + (coord_map.width-poisson.getBoundingClientRect().width)*Math.random();
+        poisson.setAttribute("pos", poisson.style.left.replace("px", ""));
+        poisson.setAttribute("i", 0);
     }, 1000);
 
     input.onkeyup = () => {
@@ -52,6 +54,8 @@
             var p = poissons[i];
             var new_top = parseInt(p.style.top.replace("px", "")) + 10;
             p.style.top = new_top;
+            p.setAttribute("i", parseInt(p.getAttribute("i")) + 1);
+            p.style.left = parseInt(p.getAttribute('pos')) + Math.sin(parseInt(p.getAttribute('i')))*10;
             if (new_top > coord_map.height + coord_map.top - p.getBoundingClientRect().height) {
                 p.remove();
             }