function content(url, section) {
	if (!document.getElementById) {
		alert("A modern browser is required to view this website.");
		return;
	}
	contentframe = parent.document.getElementById("content");
	if(url && !section && contentframe) {
		contentframe.src = url;
	}
	if(url && section && parent) {
		parent.location.href = section + '?contentframe=' + url;
	}
}



/* image preloading */

function MM_preloadImages() { //v3.0
  var d=document; if(d.images){ if(!d.MM_p) d.MM_p=new Array();
    var i,j=d.MM_p.length,a=MM_preloadImages.arguments; for(i=0; i<a.length; i++)
    if (a[i].indexOf("#")!=0){ d.MM_p[j]=new Image; d.MM_p[j++].src=a[i];}}
}

function MM_swapImgRestore() { //v3.0
  var i,x,a=document.MM_sr; for(i=0;a&&i<a.length&&(x=a[i])&&x.oSrc;i++) x.src=x.oSrc;
}

function MM_findObj(n, d) { //v4.01
  var p,i,x;  if(!d) d=document; if((p=n.indexOf("?"))>0&&parent.frames.length) {
    d=parent.frames[n.substring(p+1)].document; n=n.substring(0,p);}
  if(!(x=d[n])&&d.all) x=d.all[n]; for (i=0;!x&&i<d.forms.length;i++) x=d.forms[i][n];
  for(i=0;!x&&d.layers&&i<d.layers.length;i++) x=MM_findObj(n,d.layers[i].document);
  if(!x && d.getElementById) x=d.getElementById(n); return x;
}

function MM_swapImage() { //v3.0
  var i,j=0,x,a=MM_swapImage.arguments; document.MM_sr=new Array; for(i=0;i<(a.length-2);i+=3)
   if ((x=MM_findObj(a[i]))!=null){document.MM_sr[j++]=x; if(!x.oSrc) x.oSrc=x.src; x.src=a[i+2];}
}

function MM_jumpMenu(targ,selObj,restore){ //v3.0
  eval(targ+".location='"+selObj.options[selObj.selectedIndex].value+"'");
  if (restore) selObj.selectedIndex=0;
}



/* Client-side access to querystring name=value pairs
	Version 1.2.3
	22 Jun 2005
	Adam Vandenberg
	http://adamv.com/dev/javascript/querystring
*/
function Querystring(qs) { // optionally pass a querystring to parse
	this.params = new Object()
	this.get=Querystring_get
	
	if (qs == null)
		qs=location.search.substring(1,location.search.length)

	if (qs.length == 0) return

// Turn <plus> back to <space>
// See: http://www.w3.org/TR/REC-html40/interact/forms.html#h-17.13.4.1
	qs = qs.replace(/\+/g, ' ')
	var args = qs.split('&') // parse out name/value pairs separated via &
	
// split out each name=value pair
	for (var i=0;i<args.length;i++) {
		var value;
		var pair = args[i].split('=')
		var name = unescape(pair[0])

		if (pair.length == 2)
			value = unescape(pair[1])
		else
			value = name
		
		this.params[name] = value
	}
}

function Querystring_get(key, default_) {
	// This silly looking line changes UNDEFINED to NULL
	if (default_ == null) default_ = null;
	
	var value=this.params[key]
	if (value==null) value=default_;
	
	return value
}

function checkQs(defaultURL) {
	var qs = new Querystring();
	var contentframe = qs.get("contentframe");
	if(contentframe) {
		document.write('<iframe src="' + contentframe + '" name="content" id="content" frameborder="0" marginwidth="0" marginheight="0" allowtransparency="true"></iframe>');
	} else {
		if(defaultURL) {
			document.write('<iframe src="' + defaultURL + '" name="content" id="content" frameborder="0" marginwidth="0" marginheight="0" allowtransparency="true"></iframe>');
		} else {
			alert("Please specify the default page in the given section to load.")
		}
	}
}


// if not a local link, make everything go to "_top"

function setTarget() {
  // Check that the browser is DOM compliant
  if (document.getElementById && document.createElement && document.appendChild) {
	var link;
	var links = document.getElementsByTagName('a');
	for (var i = 0; i < links.length; i++) {
		// not a local link, give a target of "_top"
		if (links[i].href.match(/^http/) && !links[i].href.match(/medievalart\.org/) && !links[i].href.match(/medarttest/)) {
			links[i].target = "_blank";
		} else {
			// open PDFs in new window
			if (links[i].href.match(/\.pdf$/)) {
				links[i].target = "_blank";
			}
		}
	}
  }
}

window.onload = setTarget;