m1_off = new Image ();
m1_off.src = "_gfx/m_bedrooms_off.gif";
m1_on = new Image ();
m1_on.src = "_gfx/m_bedrooms_on.gif";

m2_off = new Image ();
m2_off.src = "_gfx/m_lounge_off.gif";
m2_on = new Image ();
m2_on.src = "_gfx/m_lounge_on.gif";

m3_off = new Image ();
m3_off.src = "_gfx/m_kitchen_off.gif";
m3_on = new Image ();
m3_on.src = "_gfx/m_kitchen_on.gif";

m4_off = new Image ();
m4_off.src = "_gfx/m_contacts_off.gif";
m4_on = new Image ();
m4_on.src = "_gfx/m_contacts_on.gif";

m5_off = new Image ();
m5_off.src = "_gfx/m_fr_off.gif";
m5_on = new Image ();
m5_on.src = "_gfx/m_fr_on.gif";

m6_off = new Image ();
m6_off.src = "_gfx/m_home_off.gif";
m6_on = new Image ();
m6_on.src = "_gfx/m_home_on.gif";

function roll_in(img) {
	eval("document.img" + img + ".src = m" + img + "_on.src");
}

function roll_out(img) {
	eval("document.img" + img + ".src = m" + img + "_off.src");
}