function fieldfilter(evnt, regex) {

    var theChar="", theRegExp=/[0-9,\010]/, bFound=false;

    if (document.all) {
      evnt=window.event;
 	  theChar=String.fromCharCode(evnt.keyCode);
    if (!evnt.shiftKey) theChar=theChar.toLowerCase();
       bFound=regex.test(theChar);
       evnt.returnValue=bFound;
    } else if (document.layers) {
       theChar=String.fromCharCode(evnt.which);
       bFound=regex.test(theChar)
    } else {
       theChar = String.fromCharCode(evnt.charCode);
       bFound = (evnt.keyCode!=0) || regex.test(theChar);
       evnt.cancelBubble=!bFound;
    }
    return bFound;
}

//var last_preload_time;
//
//function architectureImage(imageId, preload_image) {
//	setTimeout('setImageSrc(' + imageId + ',\'' + preload_image + '\');', 10000);
//}
//
//
//function setImageSrc(imageId, preload_image) {
//	var imageObject = document.getElementById('architecture_image_' + imageId);
//	var originalImageSrc = imageObject.src;	
//	imageObject.src = preload_image;
//	architectureImage(imageId, originalImageSrc);
//}

// ZMENA OBRAZKU 1-----------------
//var img = new Array();
var cimg = new Array();
cimg[0] = 1;
cimg[1] = 1;

function chimgs(obrazok_nr, f1, f2) {
	
  var imgTimeout=window.setTimeout( "chimgs(" + obrazok_nr + ", '" + f1 + "', '" + f2 + "')", 4000 );
 
  if (cimg[obrazok_nr] == 1) {
      fotka = f1;
      cimg[obrazok_nr] = 0;
  } else {
      fotka = f2;
      cimg[obrazok_nr] = 1;	
  }
  
  var image_name = "architecture_image_" + obrazok_nr;

  if (document.getElementById(image_name)) {
      document.getElementById(image_name).src = fotka;
  } 
}


function loadImages(obrazok_nr, f1, f2) {
	
	var myTime = 3000;
	if (obrazok_nr == 0) {
		myTime = 5000;
	}
    var imgTimeout=window.setTimeout("chimgs(" + obrazok_nr + ", '" + f1 + "', '" + f2 + "')", myTime);
}