ver4 = (document.layers || document.all) ? 1 : 0;

if (document.images) {
    arImageSrc = new Array (".images/nav/partners-a.gif",
				            "images/nav/partners-b.gif",
							"images/nav/contact-a.gif",
				            "images/nav/contact-b.gif",
							"images/nav/login-a.gif",
				            "images/nav/login-b.gif",
							"images/nav/industry-a.gif",
				            "images/nav/industry-b.gif",
				            "images/nav/industry-c.gif",
							"images/nav/market-a.gif",
				            "images/nav/market-b.gif",
				            "images/nav/market-c.gif",
							"images/nav/software-a.gif",
				            "images/nav/software-b.gif",
				            "images/nav/software-c.gif",
							"images/nav/services-a.gif",
				            "images/nav/services-b.gif",
				            "images/nav/services-c.gif",
							"images/nav/about-a.gif",
				            "images/nav/about-b.gif",
							"images/nav/about-c.gif",
							"images/nav/industry-suppliers-a.gif",
				            "images/nav/industry-suppliers-b.gif",
							"images/nav/industry-marketers-a.gif",
				            "images/nav/industry-marketers-b.gif",
							"images/nav/industry-associations-a.gif",
				            "images/nav/industry-associations-b.gif",
							"images/nav/industry-agencies-a.gif",
				            "images/nav/industry-agencies-b.gif",
							"images/nav/industry-biofuels-a.gif",
				            "images/nav/industry-biofuels-b.gif",
							"images/nav/industry-stores-a.gif",
				            "images/nav/industry-stores-b.gif",
							"images/nav/industry-transportation-a.gif",
				            "images/nav/industry-transportation-b.gif",
							"images/nav/industry-entertainment-a.gif",
				            "images/nav/industry-entertainment-b.gif",
							"images/nav/industry-biotech-a.gif",
				            "images/nav/industry-biotech-b.gif");

    arImageList = new Array ();
    for (counter in arImageSrc) {
        arImageList[counter] = new Image();
        arImageList[counter].src = arImageSrc[counter];
    }
}

function rollOver(imName, over) {
    if (!document.images) { return; }
    whichIm = document.images[imName];
    if (over) {
        whichIm.src = "images/nav/" + imName + "-b.gif";
    } else {
        whichIm.src = "images/nav/" + imName + "-a.gif";
    }
}
function rollClick(imName) {
   if (!document.images || ver4) { return; }
   whichIm = document.images[imName];
   whichIm.src = imName + "-c.gif";
   dummy = setTimeout("whichIm.src = \"images/nav/" + imName + "-b.gif\"", 100);
}
function rollPress(imName, down) {
   whichIm = document.images[imName];
   if (down) {
	  whichIm.src = "images/nav/" + imName + "-c.gif";
   } else {
	  whichIm.src = "images/nav/" + imName + "-b.gif";
   }
}