restruc

public/home/tv/d3_tras.js

@@ -0,0 +1,11 @@
+
+var h=window.innerHeight; 
+d3.select(window).on("scroll",function(){
+  var t = d3.select('#trs').node().getBoundingClientRect().top;
+  var trans= -0.2 + Math.round(100*(h-t)/h)/100;
+  d3.select('.grid').style("background-color","rgba(0,0,0,"+ trans +")");
+  
+  
+});
+
+