function setVat(vat) {
  var url;
  url = window.location.pathname+"?incl_tax="+vat;
  window.location.href = url;
}

function openWin( windowURL, windowName, windowFeatures ) {
	return window.open( windowURL, windowName, windowFeatures ) ;
}

sfHover = function() {
  if(document.getElementById("headernav")){
  	var sfEls = document.getElementById("headernav").getElementsByTagName("LI");
    if(sfEls.length > 0){
    	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);