var current_room =0;





isOPERA = (navigator.userAgent.indexOf('Opera') >= 0)? true : false;

isIE    = (document.all && !isOPERA)? true : false;

isDOM   = (document.getElementById && !isIE )? true : false;



function getID(id){

	if (isDOM){

		return document.getElementById(id);		

	} else if (isIE) {

		return document.all[id];

	} else {

		return false;

	}

}



function show_main_img( theaction ){



if( theimg = getID('mainimg') ){

	if( theaction== 'show' ){

	theimg.visibility='visible';

	theimg.style.visibility='visible';

	} else {

	theimg.visibility='hidden';

	theimg.style.visibility='hidden';

	}

}

return true;

}



function show_main_img2( theaction ){



if( theimg = getID('mainimg2') ){

	if( theaction== 'show' ){

	theimg.visibility='visible';

	theimg.style.visibility='visible';

	} else {

	theimg.visibility='hidden';

	theimg.style.visibility='hidden';

	}

}

return true;

}