loaded      = false;
browser     = '';
version     = '';
entrance    = '';
selected = '';
selectedSrc = '';
selectedNorm = '';

if (browser == ''){
	if (navigator.appName.indexOf('Microsoft') != -1)
	browser = 'IE'
	else if (navigator.appName.indexOf('Netscape') != -1)
		browser = 'Netscape'
	else browser = 'NN';
}

if (version == ''){
	version= navigator.appVersion;
	paren = version.indexOf('(');
	whole_version = navigator.appVersion.substring(0,paren-1);
	version         = parseInt(whole_version);
}

if (browser == 'IE' && version >= 4) entrance = 'yes';
if (browser == 'IE' && version < 4) entrance = 'no';
if (browser == 'Netscape' && version >= 2.02) entrance = 'yes';
if (browser == 'Netscape' && version < 2.02) entrance = 'no';


function over(imgName, srcName){
	if (entrance == 'yes'){
		document[imgName].src = srcName;
	}
}

function out(imgName, srcName){
	if (entrance == 'yes' ) {
		if (imgName == selected) {
			document[imgName].src = selectedSrc;
		} else {
			document[imgName].src = srcName;
		}
	}
}


function clicked(imgName, srcName, norm) {
	if (entrance == 'yes' ) {
		if ( selected == '' ) {
		} else {
			document[selected].src = selectedNorm;
		}
		selected = imgName;
		selectedNorm = norm;
		selectedSrc = srcName;
		document[imgName].src = srcName;
	}

}