function mouseOverM1() {
		document.m1.src ="menu/voice01_on.jpg"
}
function mouseOutM1() {
		document.m1.src ="menu/voice01_off.jpg"
}
function mouseOverM2() {
		document.m2.src ="menu/voice02_on.jpg"
}
function mouseOutM2() {
		document.m2.src ="menu/voice02_off.jpg"
}
function mouseOverM3() {
		document.m3.src ="menu/voice03_on.jpg"
}
function mouseOutM3() {
		document.m3.src ="menu/voice03_off.jpg"
}
function mouseOverM4() {
		document.m4.src ="menu/voice04_on.jpg"
}
function mouseOutM4() {
		document.m4.src ="menu/voice04_off.jpg"
}