String.prototype.toElement

@Description: Converts a string of HTML code to a sb.element for dom manipulation
@File: String/prototype/toElement.js
@Param: String parentNodeType The nodetype of the parent element returned if there is not already a single parent element for all elements contained in the html string - see example two - defaults to span if it is not given
@Example:

//would return div as the element with all its children
sb.dom.HTMLToElement('<div id="joe"><p class="test">hey there</p></div>');
//would return all elements grouped under a span because they have no comment parent
sb.dom.HTMLToElement('<p class="test">hey there</p><p class="test2">hey there2</p>');