insertBefore("hr", "I was inserted AFTER refNode", "#referenceNode","node")
insertBefore("div", "I was inserted BEFORE parentNode", "#parent_Node","node")
insertBefore("h1", "I was inserted BEFORE any content in refNode", "#referenceNode", "node")
insertBefore("h1", "I was inserted BEFORE any content in refNode", "#referenceNode", "child")
insertAfter("h3", "Inserted AFTER refNode/firstChild", "#referenceNode");
insertBefore("h1", "I was inserted AFTER firstChild", "#referenceNode", "child")
insertBefore("h1", "I was inserted AFTER secondChild", "#referenceNode2", "child2")