function toggle(strName, picName, mdata, mpic) {
 var imgObj = eval('document.'+picName);
 if (document.getElementById(strName).style.display=='')
 {
   document.getElementById(strName).style.display='none';
   imgObj.src="img/h.gif";
 }
 else
 {
    document.getElementById(strName).style.display='';
	imgObj.src="img/s.gif";
	for (i=0; i<mdata.length; i++)
	  if(mdata[i] != strName)
	  {
        document.getElementById(mdata[i]).style.display='none';
		var imgObj2 = eval('document.'+mpic[i]);		
        imgObj2.src="img/h.gif";		
	  }
 }
}

function lighticon(id) {
	var elem = document.getElementById(id);
	var re = new RegExp("_g.gif", "g");
	elem.src = elem.src.replace(re, ".gif");
}

function darkenicon(id) {
	var elem = document.getElementById(id);
	var re = new RegExp(".gif", "g");
	elem.src = elem.src.replace(re, "_g.gif");
}


function lightregion(id) {
	lighticon(id);
	var elem = document.getElementById("h"+id);
	elem.style.background = "#e6e6dc";
}

function darkenregion(id) {
	darkenicon(id);
	var elem = document.getElementById("h"+id);
	elem.style.background = "";
}