.mainNav a.pos1
{
	background-image: url(../Img/NavItemBlue.png);
}

.mainNav a.pos2
{
	background-image: url(../Img/NavItemRed.png);
}

.mainNav a.pos3
{
	background-image: url(../Img/NavItemGreen.png);
}

.mainNav a.pos4
{
	background-image: url(../Img/NavItemOrange.png);
}