Nav1On = new Image();
Nav1On.src = "../images/aboutus_over.gif";
Nav1Off = new Image();
Nav1Off.src = "../images/aboutus_off.gif";

Nav2On = new Image();
Nav2On.src = "../images/whatwedo_over.gif";
Nav2Off = new Image();
Nav2Off.src = "../images/whatwedo_off.gif";

Nav3On = new Image();
Nav3On.src = "../images/products_over.gif";
Nav3Off = new Image();
Nav3Off.src = "../images/products_off.gif";

Nav4On = new Image();
Nav4On.src = "../images/industrysolutions_over.gif";
Nav4Off = new Image();
Nav4Off.src = "../images/industrysolutions_off.gif";

Nav5On = new Image();
Nav5On.src = "../images/onlinedatacards_over.gif";
Nav5Off = new Image();
Nav5Off.src = "../images/onlinedatacards_off.gif";

Nav6On = new Image();
Nav6On.src = "../images/contactus_over.gif";
Nav6Off = new Image();
Nav6Off.src = "../images/contactus_off.gif";

Nav7On = new Image();
Nav7On.src = "../images/international_over.gif";
Nav7Off = new Image();
Nav7Off.src = "../images/international_off.gif";

Nav9On = new Image();
Nav9On.src = "../images/publishers_over.gif";
Nav9Off = new Image();
Nav9Off.src = "../images/publishers_off.gif";

function rollover(whichimg,overimg) {
    eval('document.images["' + whichimg + '"].src = ' + overimg + '.src');
}