function changeLayerIndex(object, index) {
    if (document.getElementById && document.getElementById(object) != null)
         node = document.getElementById(object).style.zIndex=index;
	else if (document.layers && document.layers[object] != null)
        document.layers[object].zIndex = index;
	else if (document.all){
        document.all[object].style.zIndex = index;
	}
	showText('mainText')
}
function showText(object){
    if (document.getElementById && document.getElementById(object) != null){
		 node = document.getElementById(object).style.visibility='visible';
	}else if (document.layers && document.layers[object] != null)
		document.layers[object].visibility='visible';
	else if (document.all){
		document.all[object].style.visibility='visible';
	}
}