var gButtonId = new Array('cvs','cst','ptp','use');
var gButton = new Array();

document.onLoad= function(){
	MM_preloadImages('image/btn_contact_on.jpg','image/btn_dl_on.jpg','image/btn_recruit_on.jpg','image/top_menu_USE_on.jpg','image/top_menu_CST_on.jpg','image/top_menu_CVS_on.jpg','image/top_menu_PTP_on.jpg')
	for(i=0;i<gButtonId.length;i++){
		gButton[i] = document.getElementById(gButtonId[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_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_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];
		}
	}
}

function CY_swapImage() { //v3.0
	var i,j=0,x,a=CY_swapImage.arguments;
//alert(a[0]);
	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];
		}
	}
	CY_switchImage(a[0]);
}

function CY_switchImage(omitid){ //v3.0
//alert(omitid);
	for(var i=0; i<gButtonId.length; i++){
		if ( omitid == "menu_" + gButtonId[i] ){
			;
		} else {
//			var imgid = "img_" + gButtonId[i].toUpperCase();
			var imgid = "img_" + gButtonId[i];
//			alert(imgid);
//			alert(document.getElementById(imgid).src);
			var imgurl = 'image/top_menu_' + gButtonId[i].toUpperCase() + '.jpg';
			document.getElementById(imgid).src = imgurl;
		}
	}
}