image1 = new Image();
image2 = new Image();
image1.src = "../imej/discuss_on.png";
image2.src = "../imej/email_on.png";

function emailover()
{
image1.src='../imej/email_on.png';

}

function emailout()
{
image1.src='../imej/email_off.png';

}

function discussover()
{
image2.src='../imej/discuss_on.png';

}

function discussout()
{
image2.src='../imej/discuss_out.png';
}