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


function LayerSH(LayerName,Status) {
ns4 = (document.layers)?true:false
ie4 = (document.all)?true:false

	if (ns4) {
		LayerN = document.layers[LayerName]
		if (Status == 'show') LayerN.visibility = 'show';
		if (Status == 'hide') LayerN.visibility = 'hidden';
	}	
	if (ie4) {
		LayerN = document.all[LayerName].style
		if (Status == 'show') LayerN.visibility = 'visible';
		if (Status == 'hide') LayerN.visibility = 'hidden';
	}
}