});
var form_source = d3.select(drawer.selector).append("form")
+ .attr("id", "weight-sources")
.attr("action", "#");
WeightsDrawer.sources.forEach(function(s) {
var div = form_source.append("div");
.attr("transform", "translate(" + WeightsDrawer.margin.left + "," + WeightsDrawer.margin.top + ")");
var form_period = d3.select(drawer.selector).append("form")
+ .attr("class", "graph-period")
.attr("action", "#");
WeightsDrawer.periods.forEach(function(p) {
var div = form_period.append("div");