OMAPW = 312;
OMAPH = 496;
ZOOMSX = 4;
ZOOMSY = 8;
UNW = new CoordUTM(616247,6227085);
UNE = new CoordUTM(728096,6227085);
USE = new CoordUTM(728096,6048746);
USW = new CoordUTM(616247,6048746);
OSCLX = 358.5;
OSCLY = 359.6;
ZMAPW=598;
ZMAPH=493;
ZMOX=52;
ZMOY=54;
ZSCLX=50.0;
ZSCLY=50.0;
FULLW=2236;
FULLH=3566;



function UTMDist(p1,p2)
{
  return 0.001*Math.sqrt((p1.x-p2.x)*(p1.x-p2.x)+(p1.y-p2.y)*(p1.y-p2.y));
}


function OMapUTM(x,y)
{
  return new CoordUTM(x*OSCLX+UNW.x,UNW.y-y*OSCLY);
}

var OMapWin=null;
function OpenOMap()
{
  Options="titlebar,status";
  Options+=",height="+OMAPH;
  Options+=",width="+OMAPW;
  if (OMapWin==null || OMapWin.closed) OMapWin=window.open("sjkort.htm","OMAP",Options);
  OMapWin.focus();
}

var ZMapWin=null;

function OpenZMap(x,y)
{
  Options="titlebar,status";
  Options+=",height="+ZMAPH;
  Options+=",width="+ZMAPW;
  if (ZMapWin==null || ZMapWin.closed) ZMapWin=window.open("sjzkort.htm?"+x+"&"+y,"ZMAP",Options);
  else ZMapWin.location.href="sjzkort.htm?"+x+"&"+y;
  ZMapWin.focus();
}

function OpenZUTM(utm)
{
  if (utm) {
    x=Math.floor(((utm.x-UNW.x)/ZSCLX-0.25*ZMOX)/(ZMAPW-ZMOX));
    y=Math.floor(((UNW.y-utm.y)/ZSCLY-0.25*ZMOY)/(ZMAPH-ZMOY));
    x=(x<0)?0:((x>=ZOOMSX)?ZOOMSX-1:x);
    y=(y<0)?0:((y>=ZOOMSY)?ZOOMSY-1:y);
    OpenZMap(x,y);
  }
}