(function (d3Pointers) {

	// hack to hide <template> (HTMLUnknownElement) on browsers without HTMLTemplateElement
	(function (style) {
		style.appendChild(document.createTextNode("")); // webkit workaround
		document.head.appendChild(style);
		var addCss = function (r,i) {
			return (style.sheet.insertRule) ? style.sheet.insertRule(r,i) : style.sheet.addRule(r,i); // insertRule on FF, addRule on IE
		};
		addCss("template {display: none !important;}", 0);
	})(
		document.createElement("style")
	);

	var callTemplate = function(callback,sel,d) {

		sel = (sel) ? // Include "template" on selector
				'template' + 
					(
						(sel.match(/^[\#|\.|\:|\[]/g)) ?
							sel :
							' ' + sel
					) :
				'';

		var parser = new DOMParser(),
			template = d3.select(sel)[0][0],	//select template node
			thisSelection = (d) ? this.datum(d) : this,	// Solve datum as parameter
			templateContent = template.innerHTML
									  .replace(/\<script.*?\>.*?\<\/script\>/gi,'');	// Exclude "script" on template content

		parser.async = false;

		thisSelection.each(function (d) {
			var renderedContent = callback(templateContent, d), // call render engine
				parsedContent = parser
									.parseFromString(renderedContent,'text/xml') // deserialize rendered content
									.documentElement
									.firstChild;

			// import rendered nodes on actual node
			while (parsedContent) {
				this.appendChild(
					this.ownerDocument.importNode(parsedContent, true)
				);
				parsedContent = parsedContent.nextSibling;
			}			
		});

	};

	// Add callTemplate Prototype to d3 pointers
	while((pointer = d3Pointers.pop())) {
		pointer.prototype.callTemplate = callTemplate;
	}

})(
	[d3.selection, d3.selection.enter]
);