function OpenWindow(url,wx,wy){
	x = (screen.width  - wx) / 4 + 200;
	y = (screen.height - wy) / 4 + 100;
	newWin_t1 = window.open(url,"mini","scrollbars=1,left="+x+",top="+y+",width="+wx+",height="+wy);
	newWin_t1.focus();
}



hdrMovImg = new Array();
for(i=0;i<5;i++){
(new Image()).src ="common/image/top/hdr/hdr_01_" + i + ".jpg";
hdrMovImg[i] = "common/image/top/hdr/hdr_01_" + i + ".jpg";
}

 function changeHeader() {
   var selectNum = Math.floor(Math.random() * hdrMovImg.length);
    var output = 
      '<img src="' + hdrMovImg[selectNum] + '">';
   document.write(output);
   //document.myImg.src = hdrMovImg[selectNum];
}