// JavaScript Document



function changeLinkHead()
{
document.getElementById('chartimgarea').style.backgroundImage='url(images/chart_images/chart_main.jpg)';
                        document.getElementById('1').style.backgroundImage='url(images/chart_images/chart_buttonbkgrnd.png)';
                        document.getElementById('2').style.backgroundImage='url(images/chart_images/chart_buttonbkgrnd.png)';
                        document.getElementById('3').style.backgroundImage='url(images/chart_images/chart_buttonbkgrnd.png)';
                        document.getElementById('4').style.backgroundImage='url(images/chart_images/chart_buttonbkgrnd.png)';
                        document.getElementById('5').style.backgroundImage='url(images/chart_images/chart_buttonbkgrnd.png)'


}


function changeLink()
{
document.getElementById('chartimgarea').style.backgroundImage='url(images/chart_images/chart_multiscale.jpg)';
                        document.getElementById('1').style.backgroundImage='url(images/chart_images/chart_rolloverimg.png)';
                        document.getElementById('2').style.backgroundImage='url(images/chart_images/chart_buttonbkgrnd.png)';
                        document.getElementById('3').style.backgroundImage='url(images/chart_images/chart_buttonbkgrnd.png)';
                        document.getElementById('4').style.backgroundImage='url(images/chart_images/chart_buttonbkgrnd.png)';
                        document.getElementById('5').style.backgroundImage='url(images/chart_images/chart_buttonbkgrnd.png)'


}

function changeLink2()
{
document.getElementById('chartimgarea').style.backgroundImage='url(images/chart_images/chart_bone.jpg)';
                        document.getElementById('1').style.backgroundImage='url(images/chart_images/chart_buttonbkgrnd.png)';
                        document.getElementById('2').style.backgroundImage='url(images/chart_images/chart_rolloverimg.png)';
                        document.getElementById('3').style.backgroundImage='url(images/chart_images/chart_buttonbkgrnd.png)';
                        document.getElementById('4').style.backgroundImage='url(images/chart_images/chart_buttonbkgrnd.png)';
                        document.getElementById('5').style.backgroundImage='url(images/chart_images/chart_buttonbkgrnd.png)'


}

function changeLink3()
{
document.getElementById('chartimgarea').style.backgroundImage='url(images/chart_images/chart_crashtest.jpg)';
                        document.getElementById('1').style.backgroundImage='url(images/chart_images/chart_buttonbkgrnd.png)';
                        document.getElementById('2').style.backgroundImage='url(images/chart_images/chart_buttonbkgrnd.png)';
                        document.getElementById('3').style.backgroundImage='url(images/chart_images/chart_rolloverimg.png)';
                        document.getElementById('4').style.backgroundImage='url(images/chart_images/chart_buttonbkgrnd.png)';
                        document.getElementById('5').style.backgroundImage='url(images/chart_images/chart_buttonbkgrnd.png)'


}


function changeLink4()
{
document.getElementById('chartimgarea').style.backgroundImage='url(images/chart_images/chart_blast.jpg)';
                        document.getElementById('1').style.backgroundImage='url(images/chart_images/chart_buttonbkgrnd.png)';
                        document.getElementById('2').style.backgroundImage='url(images/chart_images/chart_buttonbkgrnd.png)';
                        document.getElementById('3').style.backgroundImage='url(images/chart_images/chart_buttonbkgrnd.png)';
                        document.getElementById('4').style.backgroundImage='url(images/chart_images/chart_rolloverimg.png)';
                        document.getElementById('5').style.backgroundImage='url(images/chart_images/chart_buttonbkgrnd.png)'


}


function changeLink5()
{
document.getElementById('chartimgarea').style.backgroundImage='url(images/chart_images/chart_design.jpg)';
                        document.getElementById('1').style.backgroundImage='url(images/chart_images/chart_buttonbkgrnd.png)';
                        document.getElementById('2').style.backgroundImage='url(images/chart_images/chart_buttonbkgrnd.png)';
                        document.getElementById('3').style.backgroundImage='url(images/chart_images/chart_buttonbkgrnd.png)';
                        document.getElementById('4').style.backgroundImage='url(images/chart_images/chart_buttonbkgrnd.png)';
                        document.getElementById('5').style.backgroundImage='url(images/chart_images/chart_rolloverimg.png)'


}