var roll_marker = new Image();
var roll_marker_off = new Image();

roll_marker.src = "/Images/side_nav/markers/white_mark_inv.gif";
roll_marker_off.src = "/Images/shim.gif";

var roll_marker1 = new Image();
var roll_marker1_off = new Image();

roll_marker1.src = "/Images/whiteMarkInvGrayOn.gif";
roll_marker1_off.src = "/Images/shim.gif";

function doButtons(picimage,imagename) {
		eval("document[imagename].src = " + picimage + ".src");
	}

function doButtonsOff(picimage,imagename) {
	eval("document[imagename].src = " + picimage + ".src");
}