// Bios

nav_l=0;

function navshow(objid){
	switch(nav_l){
		case 0:
			runtheshow();
			break;
		default:
			if(document.getElementById(objid).style.display == 'block'){document.getElementById(objid).style.display = 'none';} 
			else{runtheshow();}			
			break;
	}

	function runtheshow(){
		nav_l=objid;	// set currentrollover to l	
		document.getElementById(nav_l).style.display='block';
	}
}