//<!--

function showHideLayers() { //v3.0
  var i,p,v,obj,args=showHideLayers.arguments;
	for (i=0; i<(args.length); i++) 
	{
	if ((obj=MM_findObj(args[i]))!=null)
		 {
		if (obj.visibility)//netscape
			{
			if(obj.visibility == "hide" || obj.visibility == "hidden" )
				{obj.visibility="visible";}
			else
				{obj.visibility="hidden";}
			}
		if (obj.style)//explorer
			 {
			 if (document.getElementById(args[i]).style.display == 'none')
				 document.getElementById(args[i]).style.display='';
			 else
				document.getElementById(args[i]).style.display = 'none';
			}
		}
	}
}

function forceClosedLayers() { //v3.0
  var i,p,v,obj,args=forceClosedLayers.arguments;
	for (i=0; i<(args.length); i++) 
	{
	if ((obj=MM_findObj(args[i]))!=null)
		 {
		if (obj.visibility)//netscape
			{obj.visibility="hidden";}
		if (obj.style)//explorer
			 {document.getElementById(args[i]).style.display = 'none';}
		}
	}
}

function forceOpenLayers() { //v3.0
  var i,p,v,obj,args=forceOpenLayers.arguments;
	for (i=0; i<(args.length); i++) 
	{
	if ((obj=MM_findObj(args[i]))!=null)
		 {
		if (obj.visibility)//netscape
			{obj.visibility="block";}
		if (obj.style)//explorer
			 {document.getElementById(args[i]).style.display = 'block';}
		}
	}
}

function swap_img(img_name,div_id){
  var i,p,v,obj
	img =MM_findObj(img_name);
	img_src = img.src;
	img_src_15 = img_src.substring(img_src.length - 15);
	img_src_16 = img_src.substring(img_src.length - 16);
	if ((obj=MM_findObj(div_id))!=null)
		 {
		if (obj.visibility)//netscape
			{
			}
		if (obj.style)//explorer
			 {
			  if (document.getElementById(div_id).style.display == '')
				{
				 if(img_src_15 == "b_plus_over.gif")
					{img.src = 'images/b_minus_over.gif';}
				else
					{img.src = 'images/b_minus.gif';}
				 }
			 else
				{
				if(img_src_16 == "b_minus_over.gif")
					{img.src = 'images/b_plus_over.gif';}
				else
					{img.src = 'images/b_plus.gif';}
				}
			 }
		}
}
function over_img(img_name,src)
	{
	img_src = eval("document.divs." + img_name + ".src");
	if(img_src.substring(img_src.length - 10) == "b_plus.gif")
		{
		eval("document.divs." + img_name + ".src = 'images/b_plus_over.gif'");
		}
	if(img_src.substring(img_src.length - 11) == "b_minus.gif")
		{
		eval("document.divs." + img_name + ".src = 'images/b_minus_over.gif'");
		}
	}
function out_img(img_name,src)
	{
	img_src = eval("document.divs." + img_name + ".src");
	if(img_src.substring(img_src.length - 15) == "b_plus_over.gif")
		{
		eval("document.divs." + img_name + ".src = 'images/b_plus.gif'");
		}
	if(img_src.substring(img_src.length - 16) == "b_minus_over.gif")
		{
		eval("document.divs." + img_name + ".src = 'images/b_minus.gif'");
		}
	}
//-->