<!-- Script for SHOW/HIDE [+]/[-} boxes -->
function toggle(id){
    ul = "ul_" + id;
    img = "img_" + id;
    ulElement = document.getElementById(ul);
    imgElement = document.getElementById(img);
    if (ulElement){
	    if (ulElement.className == 'closed'){
		    ulElement.className = "open";
		    imgElement.src = "http://www.mpw.net/general/images/collapse.gif";
		    }else{
		    ulElement.className = "closed";
		    imgElement.src = "http://www.mpw.net/general/images/expand.gif";
		    }
	    }
    }