var state = 'none';

function showhide(layer_ref) 
{
	var obj = document.getElementById (layer_ref);
	if ( obj.style.display == 'block') {
		state = 'none';
	}
	else {
		state = 'block';
	}
	if (document.all) { //IS IE 4 or 5 (or 6 beta)
		eval( "document.all." + layer_ref + ".style.display = state");
	}
	if (document.layers) { //IS NETSCAPE 4 or below
		document.layers[layer_ref].display = state;
	}
	if (document.getElementById && !document.all) {
		hza = document.getElementById(layer_ref);
		hza.style.display = state;
	}
	
}


function show(layer_ref, tdid, trid, imgName) {
	state = 'block';
	var tdobj = document.getElementById (tdid)
		var trobj = document.getElementById (trid)
		
	if (document.all) { //IS IE 4 or 5 (or 6 beta)
		eval( "document.all." + layer_ref + ".style.display = state");
	}
	if (document.layers) { //IS NETSCAPE 4 or below
		document.layers[layer_ref].display = state;
	}
	if (document.getElementById &&!document.all) {
		hza = document.getElementById(layer_ref);
		hza.style.display = state;
	}
	imgalt=document.getElementById(imgName).alt;
	
	document[imgName].alt = 'less';
	document[imgName].src = '/pix/minus.gif';
		//document.getElementById(imgName).style.display = "";
	if (trobj.className == 'f11') 
				{backimage = '#ffffff url(/pix/dotyel.gif) no-repeat left ';}
		else 
				{backimage='#eeeeee url(/pix/dotyel.gif) no-repeat left ';}
		
	if (document.all) { //IS IE 4 or 5 (or 6 beta)
			eval( "document.all." + tdid + ".style.background = backimage");

		}
		if (document.getElementById && !document.all) {
			hzaz = document.getElementById(tdid);
			hzaz.style.background = backimage;
		}
	
}



function showback(layer_ref, tdid, trid, imgName)
{
	
	var obj = document.getElementById (layer_ref);
	var tdobj = document.getElementById (tdid)
	var trobj = document.getElementById (trid)
	imgalt=document.getElementById(imgName).alt;	
	
	
	if ( obj.style.display == 'block') 
	{
		state = 'none';
	}
	else 
	{
		state = 'block';
	}
	if (document.all) 
	{ //IS IE 4 or 5 (or 6 beta)
		eval( "document.all." + layer_ref + ".style.display = state");
	}
	if (document.layers) 
	{ //IS NETSCAPE 4 or below
		document.layers[layer_ref].display = state;
	}
	if (document.getElementById && !document.all) 
	{
		hza = document.getElementById(layer_ref);
		hza.style.display = state;
	}
	
	
	if(document[imgName].alt == 'less')
	{
		
		if (trobj.className == 'f11') 
				{backimage = '#ffffff';}
		else 
				{backimage='#eeeeee';}
		if (document.all) { //IS IE 4 or 5 (or 6 beta)
			eval( "document.all." + tdid + ".style.background = backimage");
		}

		if (document.getElementById && !document.all) {
			hza2 = document.getElementById(tdid);
			hza2.style.background = backimage;
		}
		
		document[imgName].alt = 'more';
		document[imgName].src = '/pix/plus.gif';
	}
	else
	{
		
		if (trobj.className == 'f11') 
				{backimage = '#ffffff url(/pix/dotyel.gif) no-repeat left ';}
		else 
				{backimage='#eeeeee url(/pix/dotyel.gif) no-repeat left ';}
		if (document.all) { //IS IE 4 or 5 (or 6 beta)
			eval( "document.all." + tdid + ".style.background = backimage");

		}
	
		if (document.getElementById && !document.all) {
		hza2 = document.getElementById(tdid);
		hza2.style.background = backimage;
		}
		document[imgName].alt = 'less';
		document[imgName].src = '/pix/minus.gif';
	
	}
}