function toggle_hms(which){
	var obj;
	var what;
	obj=document.all[which];
	what=obj.style.visibility;
	if (what=='hidden')			{ 
		what='visible';
		obj.style.visibility=what;
	}
	else if(what=='visible'){ 
		what='hidden';
		obj.style.visibility=what;
	}
}


function toggle_hms1(which) 
    
    {
	    var obj;
        var what;
        
        what = document.getElementById(which).style.visibility;
        if (what == 'hidden') 
        {
            what = 'visible';
            document.getElementById(which).style.visibility = what;
        }
        else if (what == 'visible') 
        {
            what = 'hidden';
            document.getElementById(which).style.visibility = what;
        }
    }

function visibilityhide(which){
	var obj;
    obj=document.all[which];
    obj.style.visibility=('hidden');
}