Div sparks - Html decoration

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On the right is a Div-spark example shown, demonstrating a decoration for Html-DOM-elements. This might be used to indicate that data is generated or just for esthetic reason. :) Technically div-elements are dynamically generated via javascript, with flashing background colors. The appearance of this div-elements, the "div-sparks", is defined by following structure:

var data=[
  {t:50,  r:0,g:250,b:0,a:1 },
  {t:200, r:0,g:0,  b:0,a:0 ,spawn:1},
  {t:0,   r:0,g:250,b:0,a:0 }
];

where "t" stands for a duration, "r,g,b,a" define a color and the "spawn" flag starts creation of new sparks beside a current element.