function eval_location() {

// ascertain the document location and image path
var here=new String(document.location);
//alert(here);
// work through the keywords and test one is in the location
for (i=0;i<mkeys.length;i++)
{
	// set the image to the down state
	if (here.indexOf(mkeys[i])>-1)
	{
		path=new String(document.images['l2topxray'].src);

		// get the path to the graphics folder
		path = path.substring(0,path.lastIndexOf("/")+1);	
		MM_nbGroup('down','navbar1','l2'+mkeys[i],path+'l2-'+mkeys[i]+'-d.gif',1);
					
		for (j=0; j<skeys.length;j++)
		{
			if (here.indexOf(skeys[j])>-1)
			{
				path=new String(document.images['l2topxray'].src);			//var temp=mkeys[i]+skeys[j];
				path = path.substring(0,path.lastIndexOf("/")+1);			//var temp2=mkeys[i]+'/'+skeys[j]+'-d.gif';
				//alert(skeys[j]);
				MM_nbGroup('down','navbar2',skeys[j],path+skeys[j]+'-d.gif',1);
				//alert(path+mkeys[i]+'/'+skeys[j]+'-d.gif');
				//alert(path+skeys[j]+'-d.gif');
				break;
			}
		}
	return;
	}
}
return true;
}