function Dstate(D1,Dstat1,D2,Dstat2,D,DY) {
var Destate=new Array();
Destate[0]='none';
Destate[1]='block';
document.getElementById(D1).style.display=Destate[Dstat1];
document.getElementById(D2).style.display=Destate[Dstat2];
document.getElementById(D).style.backgroundPosition='0px '+DY+'px';	
}