function MM_swapImgRestore(){
	var i,x,a=document.MM_sr;
	for(i=0;a&&i<a.length&&(x=a[i])&&x.oSrc;i++)
		x.src=x.oSrc
}
function MM_preloadImages(){
	var d=document
	if(d.images){
			if(!d.MM_p)
				d.MM_p=new Array()
		var i,j=d.MM_p.length,a=(arguments?arguments:MM_preloadImages.arguments);
		for(i=0;i<a.length;i++)
			if(a[i].indexOf("#")!=0){
				d.MM_p[j]=new Image
				d.MM_p[j++].src=a[i]
			}
	}
}
function MM_findObj(n,d){
	var p,i,x;
	if(!d)
		d=document
	if((p=n.indexOf("?"))>0&&parent.frames.length){
		d=parent.frames[n.substring(p+1)].document
		n=n.substring(0,p)
	}
	if(!(x=d[n])&&d.all)
		x=d.all[n]
	for(i=0;!x&&i<d.forms.length;i++)
		x=d.forms[i][n]
	for(i=0;!x&&d.layers&&i<d.layers.length;i++)
		x=MM_findObj(n,d.layers[i].document)
	if(!x&&d.getElementById)
		x=$(n)
	return x
}
function MM_swapImage(){
	var i,j=0,x,a=MM_swapImage.arguments;
	document.MM_sr=new Array
	for(i=0;i<(a.length-2);i+=3)
		if((x=MM_findObj(a[i]))!=null){
			document.MM_sr[j++]=x
			if(!x.oSrc)
				x.oSrc=x.src
			x.src=a[i+2]
		}
}
function $(e){
	return document.getElementById(e)
}
function init(){
	MM_preloadImages('images/bal_airport_s.gif','images/bal_energy_s.gif','images/bal_environmental_s.gif','images/bal_landuse_s.gif','images/bal_litigation_s.gif','images/bal_municipal_s.gif','images/bal_realestate_s.gif','images/bal_telecom_s.gif')
	if($("bal_airport")){
		$("bal_airport").onmouseout=function(){
			MM_swapImgRestore()
		}
		$("bal_airport").onmouseover=function(){
			MM_swapImage('bal_airport','','images/bal_airport_s.gif',1)
		}
	}
	if($("bal_energy")){
		$("bal_energy").onmouseout=function(){
			MM_swapImgRestore()
		}
		$("bal_energy").onmouseover=function(){
			MM_swapImage('bal_energy','','images/bal_energy_s.gif',1)
		}
	}
	if($("bal_environmental")){
		$("bal_environmental").onmouseout=function(){
			MM_swapImgRestore()
		}
		$("bal_environmental").onmouseover=function(){
			MM_swapImage('bal_environmental','','images/bal_environmental_s.gif',1)
		}
	}
	
	if($("bal_landuse")){
		$("bal_landuse").onmouseout=function(){
			MM_swapImgRestore()
		}
		$("bal_landuse").onmouseover=function(){
			MM_swapImage('bal_landuse','','images/bal_landuse_s.gif',1)
		}
	}
	
	if($("bal_litigation")){
		$("bal_litigation").onmouseout=function(){
			MM_swapImgRestore()
		}
		$("bal_litigation").onmouseover=function(){
			MM_swapImage('bal_litigation','','images/bal_litigation_s.gif',1)
		}
	}

	if($("bal_municipal")){
		$("bal_municipal").onmouseout=function(){
			MM_swapImgRestore()
		}
		$("bal_municipal").onmouseover=function(){
			MM_swapImage('bal_municipal','','images/bal_municipal_s.gif',1)
		}
	}
	
	if($("bal_realestate")){
		$("bal_realestate").onmouseout=function(){
			MM_swapImgRestore()
		}
		$("bal_realestate").onmouseover=function(){
			MM_swapImage('bal_realestate','','images/bal_realestate_s.gif',1)
		}
	}
	
	if($("bal_telecom")){
		$("bal_telecom").onmouseout=function(){
			MM_swapImgRestore()
		}
		$("bal_telecom").onmouseover=function(){
			MM_swapImage('bal_telecom','','images/bal_telecom_s.gif',1)
		}
	}
	
}
window.onload=init