function ri(img_name,img_src) {
	document[img_name].src=img_src;
}

function ro(img_name,img_src) {
	document[img_name].src=img_src;
}

var win=null;

function NewWindow(mypage,myname,w,h,pos,infocus) {
        if(pos=="center") {
                myleft=(screen.width)?(screen.width-w)/2:100;mytop=(screen.height)?(screen.height-h)/2:100;
        }
        else if(pos==null) {
                myleft=0;mytop=20
        }
        settings="width="+ w +",height="+ h +",top=" + mytop + ",left=" + myleft + ",toolbar=0,scrollbars=0,location=0,statusbar=0,menubar=0,resizable=1,";win=window.open(mypage,myname,settings);
win.focus();

}