function changeBg(a,img1,img2) {
 if(!a)return true;
 if (a.style.backgroundImage == "url(" + img1 + ")") {
   a.style.backgroundImage = "url(" + img2 + ")";
 } else {
   a.style.backgroundImage = "url(" + img1 + ")";
 }
 return true;
}

function toggleOn(a){
  var e=document.getElementById(a);
  if(!e)return true;
  e.style.display="block"
  return true;
}

function toggleOff(a){
  var e=document.getElementById(a);
  if(!e)return true;
  e.style.display="none"
  return true;
}

function toggle(a) {
  var e = document.getElementById(a);
  if (e.style.display != "block") {
	if(!e)return true;
    e.style.display = "block";
  } else {
    e.style.display = "none";
  }
}

function toggleOnnb(a){
  var e=document.getElementById(a);
  if(!e)return true;
  e.style.display=""
  return true;
}

function toggleOffnb(a){
  var e=document.getElementById(a);
  if(!e)return true;
  e.style.display="none"
  return true;
}

function togglenb(a) {
  var e = document.getElementById(a);
  if (e.style.display != "") {
	if(!e)return true;
    e.style.display = "";
  } else {
    e.style.display = "none";
  }
}


function toggleByClass(a) {
  var e = document.getElementByClassName(a);
  if (e.style.display != "block") {
	if(!e)return true;
    e.style.display = "block";
  } else {
    e.style.display = "none";
  }
}


function MM_jumpMenu(targ,selObj,restore){ //v3.0
  eval(targ+".location='"+selObj.options[selObj.selectedIndex].value+"'");
  if (restore) selObj.selectedIndex=0;
}

function openPopup(URL,WIDTH,HEIGHT){
	if(!WIDTH) WIDTH=600;
	if(!HEIGHT) HEIGHT=600;
	
	WIDTH=600;
	HEIGHT=600;
	popup = window.open(URL,"popup","width="+WIDTH+", height="+HEIGHT+", scrollbars=no");
}


function showLayer(lyr) {
   makeHistory(lyr);
   document.getElementById(currentLayer).className = 'hide';
   document.getElementById(lyr).className = 'show';
   currentLayer = lyr;
}

function showTab(lyr) {
   document.getElementById(currentTab).className = 'taboff';
   document.getElementById(lyr).className = 'tabon';
   currentTab = lyr;
}

function makeHistory(newHash) {
  window.location.hash = "_" + newHash;
  expectedHash = window.location.hash;
  return true;
}

function handleHistory() {
  if ( window.location.hash != expectedHash ) {
    expectedHash = window.location.hash;
    if (expectedHash.match('tab')) showLayer(expectedHash.substring(2));
  }
  return true;
}

function pollHash() {
  handleHistory();
  window.setInterval("handleHistory()", 200);
  return true;
}

function toggleDiv(id) {
/*
	var obj=document.getElementsByTagName("div");
	for(i=0;i<obj.length;i++) {
		if(obj[i].className =="func") {
			obj[i].style.display="none";
		}
	}
*/
	if(document.getElementById(id).style.display == 'none') {
	   document.getElementById(id).style.display = 'block';
	   document.getElementById('head_'+id).className = 'function_cat open';
	} else {
	   document.getElementById(id).style.display = 'none';
	   document.getElementById('head_'+id).className = 'function_cat closed';
	}
}

function MM_swapImgRestore() { //v3.0
  var i,x,a=document.MM_sr; for(i=0;a&&i<a.length&&(x=a[i])&&x.oSrc;i++) x.src=x.oSrc;
}
function MM_preloadImages() { //v3.0
  var d=document; if(d.images){ if(!d.MM_p) d.MM_p=new Array();
    var i,j=d.MM_p.length,a=MM_preloadImages.arguments; for(i=0; i<a.length; i++)
    if (a[i].indexOf("#")!=0){ d.MM_p[j]=new Image; d.MM_p[j++].src=a[i];}}
}

function MM_findObj(n, d) { //v4.01
  var p,i,x;  if(!d) d=document; if((p=n.indexOf("?"))>0&&parent.frames.length) {
    d=parent.frames[n.substring(p+1)].document; n=n.substring(0,p);}
  if(!(x=d[n])&&d.all) x=d.all[n]; for (i=0;!x&&i<d.forms.length;i++) x=d.forms[i][n];
  for(i=0;!x&&d.layers&&i<d.layers.length;i++) x=MM_findObj(n,d.layers[i].document);
  if(!x && d.getElementById) x=d.getElementById(n); return x;
}

function MM_swapImage() { //v3.0
  var i,j=0,x,a=MM_swapImage.arguments; document.MM_sr=new Array; for(i=0;i<(a.length-2);i+=3)
   if ((x=MM_findObj(a[i]))!=null){document.MM_sr[j++]=x; if(!x.oSrc) x.oSrc=x.src; x.src=a[i+2];}
}