// AddLoadEvent Function

function addLoadEvent(func) {

	var oldonload = window.onload;

	if (typeof window.onload != 'function') {

		window.onload = func;

	} else {

		window.onload = function() {

			oldonload();

			func();

		}
	}
}

// email encoding function
function email(alias,url,lnktext, subject){
	if (subject == "") {
    	document.write ("<a href='mailto:" + alias + "@" + url + "' target='_blank'>" + lnktext + "</a>");
	} else {
    	document.write ("<a href='mailto:" + alias + "@" + url + "?subject=" + subject + "' target='_blank'>" + lnktext + "</a>");
	}
}

// addClass function
function addClass(element, value) {
	if (!element.className) {
		element.className = value;
	} else {
		newClassName = element.className;
		newClassName+= " ";
		newClassName+= value;
		element.className = newClassName;
	}
}

// pop-up
addLoadEvent(setPopups);

function popUp(winURL) {
  window.open(winURL,"popup","width=320,height=480");
}

function pdfpopUp(winURL) {
  window.open(winURL,"pdf","");
}

function externalpopUp(winURL) {
  window.open(winURL,"external","");
}

function setPopups() {
  if (!document.getElementsByTagName) return false;
  var lnks = document.getElementsByTagName("a");
  for (var i=0; i<lnks.length; i++) {
    if (lnks[i].className == "popup") {
      lnks[i].onclick = function() {
        popUp(this.getAttribute("href"));
        return false;
      }
    }
	else if (lnks[i].className == "pdf_link") {
      lnks[i].onclick = function() {
        pdfpopUp(this.getAttribute("href"));
        return false;
      }
    }
	else if (lnks[i].className == "external_link") {
      lnks[i].onclick = function() {
        externalpopUp(this.getAttribute("href"));
        return false;
      }
    }
  }
}

function sfHover() {
	var sfEls = document.getElementById("navigation").getElementsByTagName("LI");
	for (var i=0; i<sfEls.length; i++) {
		sfEls[i].onmouseover=function() {
			this.className+=" sfhover";
		}
		sfEls[i].onmouseout=function() {
			this.className=this.className.replace(new RegExp(" sfhover\\b"), "");
		}
	}
}

if (window.attachEvent) window.attachEvent("onload", sfHover);