learnhow.js
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learnhow.js
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	window.onload = function(){
	// get the app name from our URL
	var href = window.location.href;
	var matches = href.match(/appName=([a-z0-9 \%]*)/i);
	var appName = "Application";
	if(matches && matches.length > 0){
	appName = decodeURIComponent(matches[1]);
	}

	// set it in our UI
	var appNameSpan = document.getElementById("dot-learn-how-app-name");
	appNameSpan.innerHTML = "";
	appNameSpan.appendChild(document.createTextNode(appName));

	// if we need an offline cache, and we already have one installed,
	// update the UI
	matches = href.match(/hasOfflineCache=(true\|false)/);
	var hasOfflineCache = false;
	if(matches && matches.length > 0){
	hasOfflineCache = matches[1];
	// convert to boolean
	hasOfflineCache = (hasOfflineCache == "true") ? true : false;
	}
	if(hasOfflineCache == true){
	// delete the download and install steps
	var downloadStep = document.getElementById("dot-download-step");
	var installStep = document.getElementById("dot-install-step");
	downloadStep.parentNode.removeChild(downloadStep);
	installStep.parentNode.removeChild(installStep);
	}

	// get our run link info and update the UI
	matches = href.match(/runLink=([^\&])\&runLinkText=([^\&])/);
	if(matches && matches.length > 0){
	var runLink = decodeURIComponent(matches[1]);
	var runLinkElem = document.getElementById("dot-learn-how-run-link");
	runLinkElem.setAttribute("href", runLink);

	var runLinkText = decodeURIComponent(matches[2]);
	runLinkElem.innerHTML = "";
	runLinkElem.appendChild(document.createTextNode(runLinkText));
	}
	}