function init() {

	ns4 = (document.layers)? true:false
	ie4 = (document.all)? true:false

}

function preload(imgObj,imgSrc) {
	if (document.images) {
		eval(imgObj+' = new Image()')
		eval(imgObj+'.src = "'+imgSrc+'"')
	}
}

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

function layerWrite(id,nestref,text) {
	if (ns4) {
		var lyr = (nestref)? eval('document.'+nestref+'.document.'+id+'.document') : document.layers[id].document
		lyr.open()
		lyr.write(text)
		lyr.close()
	}
	else if (ie4) document.all[id].innerHTML = text
}