var clicked="" 
var gtype=".gif" 
var selstate="_over" 
if (typeof(loc)=="undefined" || loc==""){ 
	var loc="" 
	if (document.body&&document.body.innerHTML){ 
		var tt = document.body.innerHTML.toLowerCase(); 
		var last = tt.indexOf("reef_navigatie_engels.js\""); 
		if (last>0){ 
			var first = tt.lastIndexOf("\"", last); 
			if (first>0 && first<last) loc = document.body.innerHTML.substr(first+1,last-first-1); 
		} 
	} 
} 
 
document.write("<table border=\"0\" cellspacing=\"0\" cellpadding=\"0\"><tr>"); 
tr(false); 
writeButton("","modules.php?name=Content&pa=showpage&pid=63","reef_navigatie_engels_b1",136,22,"The environment","",0); 
tr(true); 
document.write("</tr></table>") 
loc=""; 
 
function tr(b){if (b) document.write("<tr>");else document.write("</tr>");} 
 
function turn_over(name) { 
	if (document.images != null && clicked != name) { 
		document[name].src = document[name+"_over"].src; 
	} 
} 
 
function turn_off(name) { 
	if (document.images != null && clicked != name) { 
		document[name].src = document[name+"_off"].src; 
	} 
} 
 
function reg(gname,name) 
{ 
if (document.images) 
	{ 
	document[name+"_off"] = new Image(); 
	document[name+"_off"].src = loc+gname+gtype; 
	document[name+"_over"] = new Image(); 
	document[name+"_over"].src = loc+gname+"_over"+gtype; 
	} 
} 
 
function evs(name){ return " onmouseover=\"turn_over('"+ name + "')\" onmouseout=\"turn_off('"+ name + "')\""} 
 
function writeButton(urld, url, name, w, h, alt, target, hsp) 
{ 
	gname = name; 
	while(typeof(document[name])!="undefined") name += "x"; 
	reg(gname, name); 
	tr(true); 
	document.write("<td>"); 
	if (alt != "") alt = " alt=\"" + alt + "\""; 
	if (target != "") target = " target=\"" + target + "\""; 
	if (w > 0) w = " width=\""+w+"\""; else w = ""; 
	if (h > 0) h = " height=\""+h+"\""; else h = "";	 
	if (url != "") url = " href=\"" + urld + url + "\""; 
	 
	document.write("<a " + url + evs(name) + target + ">");	 
	 
	if (hsp == -1) hsp =" align=\"right\""; 
	else if (hsp > 0) hsp = " hspace=\""+hsp+"\""; 
	else hsp = ""; 
	 
	document.write("<img src=\""+loc+gname+gtype+"\" name=\"" + name + "\"" + w + h + alt + hsp + " border=\"0\" /></a></td>"); 
	tr(false); 
} 
