vm='0';
function hide(lmm,vmm) { //---lmm 須在div處定義 onMouseOut="hide('Layer1','0')" onMouseOver="hide('Layer1','1')" , lmm為Layer名稱, Layer1為各Layer名稱
	if (document.all) {
		lc=eval(lmm).style;
	}
	if (vmm=='1') {vm='1'; lc.visibility='visible';}
	if (vm=='1' && vmm=='0') {lc.visibility='hidden'; vm='0';}
}