var mapimg2 = new Array(4);
mapimg2[0] = 'http://www.promotool.jp/images/top/company_back2.gif';
mapimg2[1] = 'http://www.promotool.jp/images/top/company_back2_1.gif';
mapimg2[2] = 'http://www.promotool.jp/images/top/company_back2_2.gif';
mapimg2[3] = 'http://www.promotool.jp/images/top/company_back2_3.gif';


function mapover() {
	document.getElementById('link_com1').onmouseover = function() {
		document.getElementById('Map2').src = mapimg2[1];
	}
	document.getElementById('link_com1').onmouseout = function() {
		document.getElementById('Map2').src = mapimg2[0];
	}
	document.getElementById('link_com1').onclick = function() {
		document.getElementById('Map2').src = mapimg2[0];
	}
	document.getElementById('link_com2').onmouseover = function() {
		document.getElementById('Map2').src = mapimg2[2];
	}
	document.getElementById('link_com2').onmouseout = function() {
		document.getElementById('Map2').src = mapimg2[0];
	}
	document.getElementById('link_com2').onclick = function() {
		document.getElementById('Map2').src = mapimg2[0];
	}
	document.getElementById('link_com3').onmouseover = function() {
		document.getElementById('Map2').src = mapimg2[3];
	}
	document.getElementById('link_com3').onmouseout = function() {
		document.getElementById('Map2').src = mapimg2[0];
	}
	document.getElementById('link_com3').onclick = function() {
		document.getElementById('Map2').src = mapimg2[0];
	}
}
if(window.addEventListener) {
	window.addEventListener("load",mapover,false);
} else if(window.attachEvent) {
	window.attachEvent("onload",mapover);
}