function MM_preloadImages() { //v3.0
var d=document; if(d.images){ if(!d.MM_p) d.MM_p=new Array();
var i,j=d.MM_p.length,a=MM_preloadImages.arguments; for(i=0; i<a.length; i++)
if (a[i].indexOf("#")!=0){ d.MM_p[j]=new Image; d.MM_p[j++].src=a[i];}}
}

function MM_swapImgRestore() { //v3.0
var i,x,a=document.MM_sr; for(i=0;a&&i<a.length&&(x=a[i])&&x.oSrc;i++) x.src=x.oSrc;
}

function MM_findObj(n, d) { //v4.01
var p,i,x;if(!d) d=document; if((p=n.indexOf("?"))>0&&parent.frames.length) {
d=parent.frames[n.substring(p+1)].document; n=n.substring(0,p);}
if(!(x=d[n])&&d.all) x=d.all[n]; for (i=0;!x&&i<d.forms.length;i++) x=d.forms[i][n];
for(i=0;!x&&d.layers&&i<d.layers.length;i++) x=MM_findObj(n,d.layers[i].document);
if(!x && d.getElementById) x=d.getElementById(n); return x;
}

function MM_swapImage() { //v3.0
var i,j=0,x,a=MM_swapImage.arguments; document.MM_sr=new Array; for(i=0;i<(a.length-2);i+=3)
 if ((x=MM_findObj(a[i]))!=null){document.MM_sr[j++]=x; if(!x.oSrc) x.oSrc=x.src; x.src=a[i+2];}
}


//トップページのランダム画像
img = new Array();
img[0] = "images/top_main01.jpg";
img[1] = "images/top_main02.jpg";
img[2] = "images/top_main03.jpg";
img[3] = "images/top_main04.jpg";

function setBanner(){
amount = img.length;
No = Math.floor(Math.random()*amount);
document.write("<img src=\"" + img[No] + "\" alt=\"時代をリードするベストソリューション\" width=\"900\" height=\"300\" usemap=\"#Map\" /><map name=\"Map\" id=\"Map\"><area shape=\"circle\" coords=\"810,133,65\" href=\"business/seko/\" alt=\"施工\" /><area shape=\"circle\" coords=\"664,133,65\" href=\"business/sangyo/\" alt=\"産業システム\" /><area shape=\"circle\" coords=\"518,134,65\" href=\"business/densetsu/\" alt=\"電設資材\" /></map>");
}



//リフォームページのタブ切り替え
function tab01Show(){
var cn01 = document.getElementById('tab01_content');
var cn02 = document.getElementById('tab02_content');
if(cn01.style.display == "block"){
	cn01.style.display = "block";
	cn02.style.display = "none";
}else{	cn02.style.display = "none";
	cn01.style.display = "block";
}
}

function tab02Show(){
var cn01 = document.getElementById('tab01_content');
var cn02 = document.getElementById('tab02_content');
if(cn01.style.display == "block"){
	cn02.style.display = "block";
	cn01.style.display = "none";
}else{	cn01.style.display = "none";
	cn02.style.display = "block";
}
}