function mouseOver()
{
document.homes.src ="images/home_btn_on.jpg"
}
function mouseOut()
{
document.homes.src ="images/home1_btn.gif"
}

function mouseOver2()
{
document.ask.src ="images/ask_demo_btn.gif"
}
function mouseOut2()
{
document.ask.src ="images/askfordemo_btn_off.jpg"
}

function mouseOver3()
{
document.query.src ="images/query_btn.jpg"
}
function mouseOut3()
{
document.query.src ="images/query_btn_off.jpg"
}

function mouseOver4()
{
document.contact.src ="images/contact_us_active_btn.gif"
}
function mouseOut4()
{
document.contact.src ="images/cantact_us_btn.gif"
}