// functie om png transperant in alle browsers te laten zien:
var arVersion = navigator.appVersion.split("MSIE")
var version = parseFloat(arVersion[1])

function fixPNG(myImage) 
{
    if ((version >= 5.5) && (version < 7) && (document.body.filters)) 
    {
       var imgID = (myImage.id) ? "id='" + myImage.id + "' " : ""
	   var imgClass = (myImage.className) ? "class='" + myImage.className + "' " : ""
	   var imgTitle = (myImage.title) ? 
		             "title='" + myImage.title  + "' " : "title='" + myImage.alt + "' "
	   var imgStyle = "display:inline-block;" + myImage.style.cssText
	   var strNewHTML = "<span " + imgID + imgClass + imgTitle
                  + " style=\"" + "width:" + myImage.width 
                  + "px; height:" + myImage.height 
                  + "px;" + imgStyle + ";"
                  + "filter:progid:DXImageTransform.Microsoft.AlphaImageLoader"
                  + "(src=\'" + myImage.src + "\', sizingMethod='scale');\"></span>"
	   myImage.outerHTML = strNewHTML	  
    }
}

// disable browser text select:
function disabletext(e)
{
	return false
}

function reEnable()
{
	return true
}
//if the browser is IE4+
document.onselectstart=new Function ("return false")
//if the browser is NS6
if (window.sidebar)
{
	document.onmousedown=disabletext
	document.onclick=reEnable
}

// script voor het mouseover effect:
function makearray(n) { 
  this.length = n; 
  for(var i = 1; i <= n; i++) 
    this[i] = 0; 
  return this; 
} 
function hex(i) { 
  if (i < 0)    return "00"; 
  else if (i > 255) return "ff"; 
  else      return "" + hexa[Math.floor(i/16)] + hexa[i%16]; 
} 
function hexnumtodec(hexchar) { 
  if (parseInt(hexchar) == hexchar) return Number(hexchar) 
  hexchar = hexchar.toUpperCase() 
  switch (hexchar) { 
    case 'A': return 10; break; 
    case 'B': return 11; break; 
    case 'C': return 12; break; 
    case 'D': return 13; break; 
    case 'E': return 14; break; 
    case 'F': return 15; break; 
  } 
} 
function hextodec(daHex) { 
  var daDec = Number((16 * hexnumtodec(daHex.substring(0,1))) + hexnumtodec(daHex.substring(1,2))) 
  return daDec 
} 

function convert2Dec(hex) 
  { 
    var rgb = new Array(); 
    for (var u = 0; u < 3; u++) 
      rgb[u] = parseInt(hex.substring(u*2, u*2+2), 16); 
    return rgb; 
  } 

mode = true; 

function setColor(r,g,b,what) { 
  var hr = hex(r); var hg = hex(g); var hb = hex(b); 
  var daColor = "#"+hr+hg+hb 
  if(mode){ 
           daEl.style.backgroundColor = daColor; 
           mode = false; 
  } 
  else{ 
          if(dC21[0] < dC22[0]) dC21[0] += step; 
          if(dC21[0] > dC22[0]) dC21[0] -= step; 
          if(dC21[1] < dC22[1]) dC21[1] += step; 
          if(dC21[1] > dC22[1]) dC21[1] -= step; 
          if(dC21[2] < dC22[2]) dC21[2] += step; 
          if(dC21[2] > dC22[2]) dC21[2] -= step; 
          dC2B = "RGB(" + dC21[0] + "," + dC21[1] + "," + dC21[2] + ")"; 
          daEl.style.color = dC2B; 
          mode = true; 
  }        
  if (daColor == colorend.toLowerCase()) { 
    dC21[0] = hextodec(origText.substring(0, 2)); 
    dC21[1] = hextodec(origText.substring(2, 4)); 
    dC21[2] = hextodec(origText.substring(4, 6)); 
    dC2B = "RGB(" + dC22[0] + "," + dC22[1] + "," + dC22[2] + ")"; 
    daEl.style.color = dC2B; 
    clearInterval(iId) 
    iId = null 
    timerRunning = false 
    mode = true 
  } 
} 

function fade(what) { 
  i++ 
  setColor( 
    Math.floor(sr * ((step-i)/step) + er * (i/step)), 
    Math.floor(sg * ((step-i)/step) + eg * (i/step)), 
    Math.floor(sb * ((step-i)/step) + eb * (i/step)), 
    what); 
} 
hexa = new makearray(16); 
for(var i = 0; i < 10; i++) 
  hexa[i] = i; 
hexa[10]="a"; hexa[11]="b"; hexa[12]="c"; 
hexa[13]="d"; hexa[14]="e"; hexa[15]="f"; 

var i 
var iId = null 
var sr, sg, sb 
var er, eg, eb 
var interval = 1 
var step = 16 
var colorstart 
var colorend 
var daEl 
var timerRunning = false 

function myfade(el,cs,ce,iv,st) { 
  daEl = el 
  colorstart = cs 
  colorend = ce 
  interval = iv 
  step = st 
  i = 0 
  if (timerRunning) { 
    clearInterval(iId) 
    iId = null 
  } 
  var myRe = /#([0-9a-f]{2})([0-9a-f]{2})([0-9a-f]{2})/i 
  if (colorstart.match(myRe)) { 
    sr = hextodec(RegExp.$1) 
    sg = hextodec(RegExp.$2) 
    sb = hextodec(RegExp.$3) 
  } 
  if (colorend.match(myRe)) { 
    er = hextodec(RegExp.$1) 
    eg = hextodec(RegExp.$2) 
    eb = hextodec(RegExp.$3) 
  } 
  timerRunning = false; 
  iId = setInterval("fade()",interval) 
  timerRunning = true; 
} 
function orig(tc){ 
         dC21[0] = hextodec(origText.substring(0, 2)); 
         dC21[1] = hextodec(origText.substring(2, 4)); 
         dC21[2] = hextodec(origText.substring(4, 6)); 
         tc.style.backgroundColor = "#" + origCell; 
         tc.style.borderColor = "#" + origBorder; 
         tc.style.color = "#" + origText; 
} 
function cellover1(tc) 
{ 
	if (event.srcElement.style.fontWeight != 'bold' )
	{
	  orig(tc); 
	  colorNow = "#" + origCell; 
	  colorTo = "#" + fadeToCell; 
	  myfade(tc,colorNow,colorTo,speed,steps) 
	  tc.style.borderColor = "#" + newBorder; 
	 }
} 
function cellout1(tc) {
  if(event.srcElement.style.fontWeight != 'bold' ) 
  {
	  clearInterval(iId) 
	  tc.style.borderColor = "#" + origBorder; 
	  orig(tc); 
  } 
}

//hou actieve link vast:
function changeit()
{
	if(!document.all) return;
	if (event.srcElement.id.substr(0,5) == "groep" || event.srcElement.id.substr(0,5) == "links" )
	{
		for (var i= 1; i < items_totaal; i++ )
		{
			document.all["links"+i].style.fontWeight = '';
			document.all["groep"+i].style.fontWeight = '';
			document.all["groep"+i].style.backgroundColor = '';
		}
		if (event.srcElement.id.substr(0,5) == "links")
		{
			var deze = ("groep"+(event.srcElement.id.substr(5,2)));
			document.all[deze].style.backgroundColor = fadeToCell;
			document.all[deze].style.fontWeight = 'bold';
			event.srcElement.style.fontWeight = 'bold';	
		}
		else
		{
			event.srcElement.style.backgroundColor = fadeToCell;		
		}
	}
}