/*    
PDFObject v1.2.20111123    
https://github.com/pipwerks/PDFObject    
Copyright (c) Philip Hutchison    
MIT-style license: http://pipwerks.mit-license.org/*/
/*jslint browser: true, sloppy: true, white: true, plusplus: true */
/*global ActiveXObject, window */
var PDFObject = function(obj) {
	if (!obj || !obj.url) {
		return false;
	}
	var pdfobjectversion = "1.2",
	//Set reasonable defaults        
	id = obj.id || "vcipdfview", width = obj.width || "100%", height = obj.height
			|| "100%", pdfOpenParams = obj.pdfOpenParams, url, pluginTypeFound,
	//declare functions        
	createAXO, hasReaderActiveX, hasReader, hasGeneric, pluginFound, setCssForFullWindowPdf, buildQueryString, get, embed;
	/* ----------------------------------------------------       Supporting functions       ---------------------------------------------------- */
	createAXO = function(type) {
		var ax;
		try {
			ax = new ActiveXObject(type);
		} catch (e) {
			//ensure ax remains null            
			ax = null;
		}
		return ax;
	};
	//Tests specifically for Adobe Reader (aka Acrobat) in Internet Explorer    
	hasReaderActiveX = function() {
		var axObj = null;
		if (window.ActiveXObject) {

			axObj = createAXO("AcroPDF.PDF");
			//If "AcroPDF.PDF" didn't work, try "PDF.PdfCtrl"            
			if (!axObj) {
				axObj = createAXO("PDF.PdfCtrl");
			}
			//If either "AcroPDF.PDF" or "PDF.PdfCtrl" are found, return true            
			if (axObj !== null) {
				return true;
			}
		}
		//If you got to this point, there's no ActiveXObject for PDFs        
		return false;
	};
	//Tests specifically for Adobe Reader (aka Adobe Acrobat) in non-IE browsers    
	hasReader = function() {
		var i, n = navigator.plugins, count = n.length, regx = /Adobe Reader|Adobe PDF|Acrobat/gi;
		for (i = 0; i < count; i++) {
			if (regx.test(n[i].name)) {
				return true;
			}
		}
		return false;
	};
	//Detects unbranded PDF support    
	hasGeneric = function() {
		var plugin = navigator.mimeTypes["application/pdf"];
		return (plugin && plugin.enabledPlugin);
	};
	//Determines what kind of PDF support is available: Adobe or generic    
	pluginFound = function() {
		var type = null;
		if (hasReader() || hasReaderActiveX()) {
			type = "Adobe";
		} else if (hasGeneric()) {
			type = "generic";
		}
		return type;
	};
	//If setting PDF to fill page, need to handle some CSS first    
	setCssForFullWindowPdf = function() {
		var html = document.getElementsByTagName("html"), html_style, body_style;
		if (!html) {
			return false;
		}
		html_style = html[0].style;
		body_style = document.body.style;
		html_style.height = "100%";
		html_style.overflow = "hidden";
		body_style.margin = "0";
		body_style.padding = "0";
		body_style.height = "100%";
		body_style.overflow = "hidden";
	};
	//Creating a querystring for using PDF Open parameters when embedding PDF    
	buildQueryString = function(pdfParams) {
		var string = "", prop;
		if (!pdfParams) {
			return string;
		}
		for (prop in pdfParams) {
			if (pdfParams.hasOwnProperty(prop)) {
				string += prop + "=";
				if (prop === "search") {
					string += encodeURI(pdfParams[prop]);
				} else {
					string += pdfParams[prop];
				}
				string += "&";
			}
		}
		//Remove last ampersand        
		return string.slice(0, string.length - 1);
	};
	//Simple function for returning values from PDFObject    
	get = function(prop) {
		var value = null;
		switch (prop) {
		case "url":
			value = url;
			break;
		case "id":
			value = id;
			break;
		case "width":
			value = width;
			break;
		case "height":
			value = height;
			break;
		case "pdfOpenParams":
			value = pdfOpenParams;
			break;
		case "pluginTypeFound":
			value = pluginTypeFound;
			break;
		case "pdfobjectversion":
			value = pdfobjectversion;
			break;
		}
		return value;
	};
	/* ----------------------------------------------------       PDF Embedding functions       ---------------------------------------------------- */
	embed = function(targetID) {
		if (!pluginTypeFound) {
			return false;
		}
		var targetNode = null;
		if (targetID) {
			//Allow users to pass an element OR an element's ID            
			targetNode = (targetID.nodeType && targetID.nodeType === 1) ? targetID
					: document.getElementById(targetID);
			//Ensure target element is found in document before continuing            
			if (!targetNode) {
				return false;
			}
		} else {
			targetNode = document.body;
			setCssForFullWindowPdf();
			width = "100%";
			height = "100%";
		}
		targetNode.innerHTML = '<object data="' + url
				+ '" type="application/pdf" width="' + width + '" height="'
				+ height + '" id="' + id + '">';
		//targetNode.innerHTML +='<param name="_version" value="327680">';
		//targetNode.innerHTML +='<param name="_Extentx" value="2646">';
		//targetNode.innerHTML +='<param name="_Extenty" value="1323">'; 
		// targetNode.innerHTML +='<param name="_StockProps" value="0">';
		targetNode.innerHTML += '</object>';
		//style="margin-top:-70px;"
		return targetNode.getElementsByTagName("object")[0];
	};
	//The hash (#) prevents odd behavior in Windows
	//Append optional Adobe params for opening document
	url = encodeURI(obj.url) + "#" + buildQueryString(pdfOpenParams);
	pluginTypeFound = pluginFound();
	this.get = function(prop) {
		return get(prop);
	};
	this.embed = function(id) {
		return embed(id);
	};
	this.pdfobjectversion = pdfobjectversion;
	return this;
};