function showimage(object){

if (parent.header.document.layers && document.layers[object]) {
       parent.header.document.layers[object].visibility = 'visible';}
    else {
    if (document.all) {
	var allDivs = parent.header.document.all.tags("DIV");
	for (var i=0; i < allDivs.length; i++) {
		allDivs[i].style.visibility = 'hidden';
	}	
    	parent.header.document.all[object].style.visibility = 'visible';}
    else {
	var allDivs = parent.header.document.getElementsByTagName("DIV");
	for (var i=0; i < allDivs.length; i++) {
		allDivs[i].style.visibility = 'hidden';
	}	
	parent.header.document.getElementById(object).style.visibility = 'visible';}
    }
}

//

function turnOn(imageName) {
  if (document.images) {
    document[imageName].src = eval(imageName + "on.src");
  }
}

function turnOff(imageName) {
  if (document.images) {
    document[imageName].src = eval(imageName + "off.src");
  }
}