function swapImage(elementId, src)
    {
        var imgMain = document.getElementById(elementId);        
        var filename = getFilename(imgMain.src);        
        var newSrc = imgMain.src.replace(filename, src);		
		imgMain.src = "http://localhost:8080/App/Images/Common/ajax-loader.gif";		
        imgMain.src = newSrc;
    }
    
    function subMenu_onmouseevent(subMenuImage, newSubMenuImage)
    {
        var filename = getFilename(subMenuImage.src);              
        var newSubMenuImageSrc = subMenuImage.src.replace(filename, newSubMenuImage);        
        subMenuImage.src = newSubMenuImageSrc;
    }
    
    function getFilename(src)
    {
        var lastIndex = src.lastIndexOf("/");
        return src.substring(lastIndex + 1);        
    }
    
    function highlightMenuItem(elementId)
    { 
        var td = document.getElementById(elementId);
        td.style.backgroundColor = 'White';
    }
    
    function unHighlightMenuItem(elementId)
    { 
        var td = document.getElementById(elementId);
        td.style.backgroundColor = 'Transparent';
    }