var brws = ( parseInt(navigator.appVersion)==4 );

var icn = new Array('to_photo','to_how','to_adv','back','close','p_tab01','p_tab02','p_tab03','p_tab04');

var icn_up = new Array(icn.length);
var icn_dw = new Array(icn.length);
var icn_cl = new Array(icn.length);

for(i=0;i<icn.length;i++){
  icn_up[i] = new Image();
  icn_up[i].src="img/"+icn[i]+"_on.gif";
  icn_dw[i] = new Image();
  icn_dw[i].src="img/"+icn[i]+"_off.gif";
  icn_cl[i] = new Image();
  icn_cl[i].src="img/"+icn[i]+"_off.gif";
}

function up(tgt){
  brws && (tgt.src = icn_up[find_no(tgt.src)].src);
}

function dw(tgt){
  brws && (tgt.src = icn_dw[find_no(tgt.src)].src);
}

function cl(tgt){
  brws && (tgt.src = icn_cl[find_no(tgt.src)].src);
}
function find_no(str){
  for(i=0;i<=icn.length;i++){
    if(str.indexOf(icn[i])>0){
      return i;
    }
  }
}

function openwin(url) {
w = window.open(url, 'win','width=560,height=600,status=no,scrollbars=yes,directories=no,menubar=no,resizable=yes,toolbar=no');
}