if (document.images) {
tlac_B1_off = new Image(); tlac_B1_off.src = "images/tlac_B1.jpg"
tlac_B1_over = new Image(); tlac_B1_over.src = "images/tlac_B1_over.jpg"
tlac_B2_off = new Image(); tlac_B2_off.src = "images/tlac_B2.jpg"
tlac_B2_over = new Image(); tlac_B2_over.src = "images/tlac_B2_over.jpg"
tlac_B3_off = new Image(); tlac_B3_off.src = "images/tlac_B3.jpg"
tlac_B3_over = new Image(); tlac_B3_over.src = "images/tlac_B3_over.jpg"
tlac_B4_off = new Image(); tlac_B4_off.src = "images/tlac_B4.gif"
tlac_B4_over = new Image(); tlac_B4_over.src = "images/tlac_B4_over.gif"
}

function turn_off(ImageName) {
if (document.images != null) {
	document[ImageName].src = eval(ImageName + "_off.src");
}
}

function turn_over(ImageName) {
if (document.images != null) {
	document[ImageName].src = eval(ImageName + "_over.src");
}
}