[D3] Force + Drag + Zoom - stuff

[D3]

HTML

<body>
    <div id="map"></div>
</body>

CSS

.node {
  stroke: #fff;
  stroke-width: 1.5px;
}

.node-active{
  stroke: #555;
  stroke-width: 1.5px;
}

.link {
  stroke: #555;
  stroke-opacity: .3;
}

.link-active {
  stroke-opacity: 1;
}

.overlay {
  fill: none;
  pointer-events: all;
}

#map{
    border: 2px #555 dashed;
    width:500px;
    height:400px;
}

JavaScript

var graph = {"nodes":[{"name":"forum.aufeminin.com","onto_class":"Website","type":["forum","marchand"],"rating":90,"id":2951,"hasURL":"forum.aufeminin.com"},{"name":"misterparfum.com","onto_class":"Website","type":["marchand"],"rating":1,"id":654654,"hasURL":"misterparfum.com"},{"name":"parfumerieprix.com","onto_class":"Website","type":["marchand"],"rating":80,"id":6546544,"hasURL":"parfumerieprix.com"},{"name":"parfumpourlui.com","onto_class":"Website","type":["marchand"],"rating":1,"id":68987978,"hasURL":"parfumpourlui.com"},		{"name":"rasoirmoinscher.com","onto_class":"Website","type":["marchand"],"rating":1,"id":9878933,"hasURL":"rasoirmoinscher.com"},{"name":"forum.lesarnaques.com","onto_class":"Website","type":["forum"],"rating":1,"id":6161,"hasURL":"forum.lesarnaques.com"},{"name":"http://forum.lesarnaques.com","onto_class":"Webpage","type":["forum","list"],"rating":1,"id":64654,"title":"MISTER PARFUM","language":"FR"},{"name":"MISTER PARFUM = ATTENTION !!","onto_class":"Post","type":["forum"],"rating":20,"id":354654,"hasContent":"MISTER PARFUM","publicationDate":"2013-09-05"},{"name":"Re: MISTER PARFUM = ATTENTION !!","onto_class":"Post","type":["forum"],"rating":50,"id":8494,"hasContent":"Re: MISTER PARFUM","publicationDate":"2013-09-05"},{"name":"MISTER PARFUM","onto_class":"Keyword","type":[],"rating":1,"id":6846874,"hasValue":"MISTER PARFUM"},{"name":"misterparfum.com","onto_class":"Keyword","type":[],"rating":1,"id":5487,"hasValue":"misterparfum.com"},{"name":"Kenzo","onto_class":"Keyword","type":[],"rating":80,"id":"parfum_kenzo","hasValue":"kenzo"},{"name":"lady million","onto_class":"Keyword","type":[],"rating":1,"id":65465465,"hasValue":"lady million"},{"name":"Jungle de Kenzo","onto_class":"Keyword","type":[],"rating":90,"id":"jungle_de_kenzo","hasValue":"jungle de...