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

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

if (document.images)
{
imgc1on=new Image(); imgc1on.src="../img/snav_clients_over.gif";
imgc1off=new Image(); imgc1off.src="../img/snav_clients_off.gif";

imgc2on=new Image(); imgc2on.src="../img/snav_clients_test_over.gif";
imgc2off=new Image(); imgc2off.src="../img/snav_clients_test_off.gif";

}