var lastbutton;


var lasttab;


var active;


var timeout = 100;





/*


active menu image load


*/


function loadactive(buttonname)


{


	var buttonsrc = buttonname;


	


	buttonsrc += "-over" ;


	if (document.images) {


		  document[ buttonname ].src = "images/" + buttonsrc + ".gif";


	}


}








/*


menu image swap


*/


function swap(buttonname,over)


{


	var buttonsrc  = buttonname;


	


	//if(buttonsrc != active || true){


		if(over){


			lasttemp = buttonname;


			buttonsrc += "-over" ;


			document[ buttonname ].src = "images/" + buttonsrc + ".gif";


			show(buttonname += "-tab");


			


			if((lastbutton) && (lastbutton + "-tab" != buttonname) && (lastbutton != active)){


				document[ lastbutton ].src = "images/" + lastbutton + "-up.gif";


			}


		    if((lasttab) && (lasttab != buttonname)) hide(lasttab);


			


			lastbutton = lasttemp;


			lasttab    = lasttemp + "-tab";


		}else {


			if (buttonsrc != active) {


				buttonsrc += "-up";


				document[ buttonname ].src = "images/" + buttonsrc + ".gif";


			}


				hide(buttonname += "-tab");


			


		}


	//}else {


	//	if((lasttab) && (lasttab != buttonname + "-tab")) hide(lasttab);


	//	show(buttonname += "-tab");


		


		//if previous, hide


	//	if(lastbutton) document[ lastbutton ].src = "images/" + lastbutton + "-up.gif";


	//	else lasttab = "";


	//	if((lasttab)) hide(lasttab);


	//	lasttab = buttonname;


	//}


}








/*


  alternates between submenu tabs


*/


function show(layerName) { 


document.getElementById(layerName).style.display = '';


} 





function hide(layerName) { 


document.getElementById(layerName).style.display = 'none';


}