Here is my chart I\'ve been writing in JS:
http://jsfiddle.net/49FVb/
The css:
-moz-user-select:none;
-khtml-user-select: none;
This seems to work well in Chrome and IE11 so far, using JQuery...
function fMakeNodeUnselectable(node){
$(node).css({"cursor":"default","-moz-user-select":"-moz-none","-khtml-user-select":"none","-webkit-user-select":"none","-o-user-select":"none","user-select":"none"});
$(node).attr("unselectable","on");
}