var browser     = '';

var version     = '';

var entrance    = '';

var cond        = '';

// BROWSER

if (browser == ''){

if (navigator.appName.indexOf('Microsoft') != -1)

browser = 'IE'

else if (navigator.appName.indexOf('Netscape') != -1)

browser = 'Netscape'

else browser = 'NN';

}

// VERSION?

if (version == ''){

version= navigator.appVersion;

paren = version.indexOf('(');

whole_version = navigator.appVersion.substring(0,paren-1);

version         = parseInt(whole_version);

}

// BROWSER & 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';

if (entrance=='yes'){

name0a=new Image;name0a.src="images/insidepages/companyinfo_off.gif";

name0b=new Image;name0b.src="images/insidepages/companyinfo_on.gif";

name1a=new Image;name1a.src="images/insidepages/products_off.gif";

name1b=new Image;name1b.src="images/insidepages/products_on.gif";

name2a=new Image;name2a.src="images/insidepages/pittech_off.gif";

name2b=new Image;name2b.src="images/insidepages/pittech_on.gif";

name3a=new Image;name3a.src="images/insidepages/contact_off.gif";

name3b=new Image;name3b.src="images/insidepages/contact_on.gif";

}

function lighten(imgName) {

if (entrance == 'yes'){

imgOn = eval(imgName + 'b.src');

document[imgName].src = imgOn;

}

}

function darken(imgName) {

if (entrance == 'yes'){

imgOff = eval(imgName + 'a.src');

document[imgName].src = imgOff;

}

}