function toggle( tableID ) {

if (document.getElementById){

	for (x=0; x<3; x++)
	  {
	   listswitch = document.getElementById('compare');
	   listswitch.getElementsByTagName('a').item(x).className = 'off';
	  }
	  
	  listswitchlinks = listswitch.getElementsByTagName('a');
	  listswitchlinks[tableID-1].className= 'on';
	  
	for (y=1; y<4; y++)
	  {
	   document.getElementById('table'+y).style.display = "none";
	  }  
	 

	 target = document.getElementById( 'table'+tableID );
       if (target.style.display == "none")
         {
         	target.style.display = "block";
       	 	//listswitch.getElementsByTagName('a').item( this ).className = 'on';
          }
		else
			target.style.display = "none";

	}

}