//img rollover
function imgRolloverOn() {
    this.imgSave = document.images[this.imgName].src;
    document.images[this.imgName].src = this.imgOn.src;
}


function imgRolloverOff() {
    document.images[this.imgName].src = this.imgSave;
}

function Rollover(imgName, on) {
    this.imgName = imgName;
    this.imgOn = new Image();
    this.imgOn.src = on;
    this.on = imgRolloverOn;
    this.off = imgRolloverOff;
}

function checkValue(c){
    var value = document.getElementById('searchField').value;
    if (c == 'on') {
        if (value == "Search") {
            document.getElementById('searchField').value = '';
        }
    }
    else{
        if (value == "") {
            document.getElementById('searchField').value = 'Search';
        }
    }
}