var submenus = ['waist','prevention','interventions','resources','further'];

// show if hidden or hide if shown
function toggleElement(link, id, closeall) {
	if (document.getElementById(id)) {
		if (document.getElementById(id).style.display == "block") {
			document.getElementById(id).style.display = "none";
			link.className = link.className.replace(/open/, "");
		} else {
			// close other links
			for (var submenu in submenus) {
				if (closeall) {
					if (document.getElementById("submenu_" + submenus[submenu])) {
						document.getElementById("submenu_" + submenus[submenu]).style.display = "none";
					}
				}
				if (document.getElementById("link_" + submenus[submenu])) {
					document.getElementById("link_" + submenus[submenu]).className = document.getElementById("link_" + submenus[submenu]).className.replace(/open/, "");
				}
			}

			document.getElementById(id).style.display = "block";
			link.className = link.className + " open";
		}
	}
}

// disable the right click
function cancel() {
	return false;
}
document.oncontextmenu = cancel;

// allow links to be launched into new browser window
function externalLinks() {
 if (!document.getElementsByTagName) return;
 var anchors = document.getElementsByTagName("a");
 for (var i=0; i<anchors.length; i++) {
   var anchor = anchors[i];
   if (anchor.getAttribute("href") &&
       anchor.getAttribute("rel") == "external")
     anchor.target = "_blank";
 }
}
window.onload = externalLinks;

function round(number,X) {
// rounds number to X decimal places, defaults to 2
    X = (!X ? 2 : X);
    return Math.round(number*Math.pow(10,X))/Math.pow(10,X);
}

// trim whitespace
function trim(s)
{
	var l=0; var r=s.length -1;
	while(l < s.length && s[l] == ' ')
	{	l++; }
	while(r > l && s[r] == ' ')
	{	r-=1;	}
	return s.substring(l, r+1);
}