function buttonState() {
    var strPath = window.location.pathname;
    var strLocation = strPath.substring(strPath.lastIndexOf('/') + 1);
    var strButtonOn = "buttonOn";
    switch (strLocation) {
        case "index.aspx":document.getElementById("button0").style.background = "transparent url(images/navigation.gif) 0px -61px no-repeat";break;
        case "typesofscooters.aspx":document.getElementById("button1").style.background = "transparent url(images/navigation.gif) -65px -61px no-repeat";break;
        case "Scooters-C231.aspx":document.getElementById("button2").style.background = "transparent url(images/navigation.gif) -190px -61px no-repeat";break;
        case "faq.aspx":document.getElementById("button3").style.background = "transparent url(images/navigation.gif) -321px -61px no-repeat";break;
        case "contactus.aspx":document.getElementById("button4").style.background = "transparent url(images/navigation.gif) -388px -61px no-repeat";break;
        case "popularlinks.aspx":document.getElementById("button5").style.background = "transparent url(images/navigation.gif) -491px -61px no-repeat";break;
        case "orders.aspx": case "vieworder.aspx": case "viewshipments.aspx": case "login.aspx":document.getElementById("button6").style.background = "transparent url(images/navigation.gif) -419px -93px no-repeat";break;
        case "basket.aspx": case "billinfo.aspx": case "shipmeth.aspx": case "paymeth.aspx": case "login.aspx":document.getElementById("button7").style.background = "transparent url(images/navigation.gif) -514px -93px no-repeat";break;       
		case "index_sales.aspx":document.getElementById("button0").style.background = "transparent url(images/navigation_sales.gif) 0px -61px no-repeat";break;
		case "Sales-C233.aspx":document.getElementById("button1").style.background = "transparent url(images/navigation_sales.gif) -65px -61px no-repeat";break;
		case "faq_sales.aspx":document.getElementById("button7").style.background = "transparent url(images/navigation_sales.gif) -334px -93px no-repeat";break;
		case "contactus_sales.aspx":document.getElementById("button8").style.background = "transparent url(images/navigation_sales.gif) -430px -93px no-repeat";break;
		case "popularlinks_sales.aspx":document.getElementById("button4").style.background = "transparent url(images/navigation_sales.gif) -340px -61px no-repeat";break;
		case "orders_sales.aspx": case "login.aspx": case "vieworder_sales.aspx": case "viewshipments_sales.aspx": case "billinfo_sales.aspx":document.getElementById("button5").style.background = "transparent url(images/navigation_sales.gif) -268px -93px no-repeat";break;
		case "basket_sales.aspx":document.getElementById("button10").style.background = "transparent url(images/navigation_sales.gif) -622px -93px no-repeat";break;
		case "Scooters-C238.aspx":document.getElementById("button2").style.background = "transparent url(images/navigation_sales.gif) -202px -61px no-repeat";break;
		case "Chairs-C236.aspx":document.getElementById("button3").style.background = "transparent url(images/navigation_sales.gif) -324px -61px no-repeat";break;
		case "Ramps-C235.aspx":document.getElementById("button4").style.background = "transparent url(images/navigation_sales.gif) -405px -61px no-repeat";break;
		case "Lifts-C237.aspx":document.getElementById("button5").style.background = "transparent url(images/navigation_sales.gif) -460px -61px no-repeat";break;
		case "Batteries-C234.aspx":document.getElementById("button6").style.background = "transparent url(images/navigation_sales.gif) -635px -61px no-repeat";break;
		case "Manual-Wheelchairs-C243.aspx":document.getElementById("button1").style.background = "transparent url(images/navigation_sales.gif) -65px -61px no-repeat";break;
        }
    }  
    buttonState();