//change the opacity for different browsers
function changeOpac(opacity, id) {
	var object = document.getElementById(id).style; 
	object.opacity = (opacity / 100);
	object.MozOpacity = (opacity / 100);
	object.KhtmlOpacity = (opacity / 100);
	object.filter = "alpha(opacity=" + opacity + ")";
}

function blendimage(divid, imageid, imagefile, millisec) {
	var speed = Math.round(millisec / 100);
	var timer = 0;
	
	//set the current image as background
	document.getElementById(divid).style.backgroundImage = "url(" + document.getElementById(imageid).src + ")";
	
	//make image transparent
	changeOpac(0, imageid);
	
	//make new image
	document.getElementById(imageid).src = imagefile;

	//fade in image
	for(i = 0; i <= 100; i++) {
		setTimeout("changeOpac(" + i + ",'" + imageid + "')",(timer * speed));
		timer++;
	}
}

// load all but first image in imgArray[?][?]
var tempArray = new Array();

function preloadimage(imgArray, imgX, imgY)     {
        var tempIdx = 0;
        var jCount = imgArray.length;

        for(j=0; j <jCount; j ++)       {
                var iCount = imgArray[j].length;

                //reminder, doesn't load i=0 (loaded in table)
                for(i=1; i<=iCount; i++)        {
                        tempArray[tempIdx]= new Image(imgX,imgY);
                        tempArray[tempIdx++].src = imgArray[j][i];
                }
      } 
}