//common.js

//ロールオーバー処理

function MM_findObj(n, d) { //v3.0
  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); return x;
}

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_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_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];}
}

function openWin(winname,w,h){
	var subwin=window.open(winname,'win1','scrollbars=no,resizable=no,toolbar=no,location=no,status=no,menubar=no,directories=no,width='+w+',height='+h);
	subwin.focus();
}
function openDetailWin(winname,w,h){
	var subwin=window.open(winname,'win1','scrollbars=yes,resizable=no,toolbar=no,location=no,status=no,menubar=no,directories=no,width='+w+',height='+h);
	subwin.focus();
}

function randomImage(){
	var imgArr = new Array("top_image1.jpg","top_image2.jpg");

	var n = Math.floor(Math.random()*2) ;
	img_html = document.getElementById('top_image').innerHTML;
	img_html = img_html.replace("top_image.jpg", imgArr[n]);
	document.getElementById('top_image').innerHTML = img_html;

}