// JavaScript

// function showSnav(target, current)
function showSnav(target, current) {
  if (current != 'homeSnav' && target != current) {
  	document.getElementById(current).style.display='none';
  }  
  if (target !='homeSnav') {
	  document.getElementById(target).style.display='block';
  }  
}

// function hideAll(current) {	
function hideAll(current) {
	document.getElementById('profileSnav').style.display='none';
	document.getElementById('portfolioSnav').style.display='none';
  if (current != 'homeSnav') {
	  document.getElementById(current).style.display='block';
  }
}

/******************************************************/
function hideSplash() 
/*
Hide the splash image on the portfolio page
*******************************************************/
{
	/* alert('hideSplash!'); */
	document.getElementById('splash').style.display='none';
}

/******************************************************/
function showSplash(image) 
/*
Display the splash image on the portfolio page
*******************************************************/
{
	/* alert('showSplash!'); */
	document.getElementById('splash').src = image;
	document.getElementById('splash').style.display = 'inline';
}

// AJAXy stuff

// function makeRequest(url)
function makeRequest(url) {
	var httpRequest;
	if (window.XMLHttpRequest) { // Mozilla, Safari, ...
		httpRequest = new XMLHttpRequest();
		if (httpRequest.overrideMimeType) {
			httpRequest.overrideMimeType('text/xml');
		}
	}else if (window.ActiveXObject) { // IE
		try {
			httpRequest = new ActiveXObject("Msxml2.XMLHTTP");
        	}
		catch (e) {
			try {
				httpRequest = new ActiveXObject("Microsoft.XMLHTTP");
			}catch (e) {}
			}
	}

	if (!httpRequest) {
		alert('Giving up :( Cannot create an XMLHTTP instance');
		return false;
	}
	httpRequest.onreadystatechange = function() { alertContents(httpRequest); };
    httpRequest.open('GET', url, true);
    httpRequest.send(null);
}

function alertContents(httpRequest) {
	if (httpRequest.readyState == 4) {
			document.getElementById('mainNav').innerHTML=httpRequest.responseText;
	}
}