fnx_web/res/include/script/file_viewer/viewer_scripts/PDFViewer.js

function PDFViewer(viewer, file) {
	this.viewer = viewer;
	this.file   = file;

	this.container = document.createElement("iframe");
	this.container.classList = "image-container";
	this.container.style.border = "none";
	this.container.src = "/res/misc/pdf-viewer/web/viewer.html?file="+apiEndpoint+"/file/"+file.id;
}

PDFViewer.prototype.render = function(parent) {
	parent.appendChild(this.container);
}