// Usage:
//  initRollOver(new Array(image names), "image url");
//  initRollOver(new Array("search", "history"),
//     "http://cnn.com/images/");
//  <A HREF="..." onMouseOver="rollOver('history', true)">
//  <IMG SRC="..." NAME="history"></A>
        
ver4 = (document.layers || document.all) ? 1 : 0;
imageDir = "";
arImageList = new Array();
plainSuffix = ".gif";
rollSuffix = "act.gif";

function initRollOver(imageNames, imageUrl) {
    if (!document.images) {return};
    imageDir = imageUrl;
    for (counter in imageNames) {
        arImageList[counter] = new Image();
        arImageList[counter].src = imageUrl + imageNames[counter] +
plainSuffix;
        arImageList[counter*2+1] = new Image();
        arImageList[counter*2+1].src = imageUrl + imageNames[counter] +
rollSuffix;
    }
}

function rollOver(imName,over) {
    if (!document.images) {return};
    whichIm = document.images[imName];
    if (!over) { whichIm.src = imageDir + imName + plainSuffix }
         else { whichIm.src = imageDir + imName + rollSuffix };
}