function imageChange(targetID, imageFile){
    document.getElementById(targetID).src = 'images/' + imageFile;
}
function swapImage(targetID){
    var currentImage = document.getElementById(targetID).src.replace('http://www.lateralmarketing.com.au/images/',''); 
    //http://localhost:57829/www/images/Ferrari1.jpg
    //alert('image is ' + document.getElementById(targetID).src);
    switch(targetID)
    {
    case 'imgGfcSolution':
        //alert('image is ' + currentImage);
        //if (1 == 2){
        switch (currentImage)
        {
        case 'grSolutionGfc01.jpg':
            imageChange(targetID, 'grSolutionGfc02.jpg');
            break;
        case 'grSolutionGfc02.jpg':
            imageChange(targetID, 'grSolutionGfc03.jpg');
            break;
        case 'grSolutionGfc03.jpg':
            imageChange(targetID, 'grSolutionGfc04.jpg');
            break;
        case 'grSolutionGfc04.jpg':
            imageChange(targetID, 'grSolutionGfc01.jpg');
            break;   
        }
        break;
    case 'imgWhoWeAre':
        switch (currentImage)
        {
        case 'grWhoWeAre01.jpg':
            imageChange(targetID, 'grWhoWeAre02.jpg');
            break;
        case 'grWhoWeAre02.jpg':
            imageChange(targetID, 'grWhoWeAre03.jpg');
            break;
        case 'grWhoWeAre03.jpg':
            imageChange(targetID, 'grWhoWeAre01.jpg');
            break;
        }
        break;
    case 'imgWhatWeDo':
        switch (currentImage)
        {
        case 'grWhatWeDo01.jpg':
            imageChange(targetID, 'grWhatWeDo02.jpg');
            break;
        case 'grWhatWeDo02.jpg':
            imageChange(targetID, 'grWhatWeDo03.jpg');
            break;
        case 'grWhatWeDo03.jpg':
            imageChange(targetID, 'grWhatWeDo01.jpg');
            break;
        }
        break;
//    default:
//      //code to be executed if n is different from case 1 and 2
    }
    //}

}