/*
	Nu-Design 6/2007
		MM Functions
		Nu functions to do timed image rotation

*/


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];}
}

function changeImage(layer,imgName,imgObj) {
	if (document.images) {
		if (document.layers && layer!=null) eval('document.'+layer+'.document.images["'+imgName+'"].src = '+imgObj+'.src')
		else document.images[imgName].src = eval(imgObj+".src")
	}
}

function nu_class(id,classname){
	//alert('id: ' + id);
	var s=document.getElementById(id);
	//if(!s){return;}
	s.className=classname;
}


//headingimage2.jpg - headingimage7.jpg
nextUpdateID = 3;
function nu_timedImageSwap(){
	var imagePath = 'graphics/'
	var rootName = 'headingimage';
	var extension = '.jpg';
	var startID = 3;
	var endID = 7;
	var nameID = 'headingimage';
	var updateInterval = 3000;
	nextUpdateID++;
		
	if(nextUpdateID > endID){
		nextUpdateID=startID;
	}
	//alert('nextUpdateID: ' + nextUpdateID);
	
	var newImage = imagePath + rootName + nextUpdateID + extension;

	MM_swapImage(nameID,'',newImage,1);
		
	
	t=setTimeout("nu_timedImageSwap()", updateInterval);
}



function nu_stopTimedImageSwap(){
	clearTimeout(t)
}