function swap(mapid) {
		swap_img = document.getElementById("paw-map");
		//base
		if(mapid==0){
			swap_img.src = "images/map/base.jpg";
		}

		//aus
		if(mapid==1){
			swap_img.src = "images/map/aus.jpg";
		}

		//new zealand
		if(mapid==2){
			swap_img.src = "images/map/nz.jpg";
		}

		//hong kong
		if(mapid==3){
			swap_img.src = "images/map/hk.jpg";
		}

		//nsw
		if(mapid==4){
			swap_img.src = "images/map/nsw.jpg";
		}

		//vic
		if(mapid==5){
			swap_img.src = "images/map/vic.jpg";
		}

		//nt
		if(mapid==6){
			swap_img.src = "images/map/nt.jpg";
		}
	}

	sfHover = function() {
		var sfEls = document.getElementById("nav").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);