var IsWin = (navigator.userAgent.indexOf("Win") >= 0);
if (IsWin) {
document.write('<link rel="stylesheet" href="../css/style_win.css" type="text/css">');
} 
else {
document.write('<link rel="stylesheet" href="../css/style_mac.css" type="text/css">');
}

function change_img(img_name,img_src){
	document.images[img_name].src = img_src;
}

function openwin(page,wname,w,h){
win_set = 'toolbar=no,location=0,directories=no,status=no,menubar=0,scrollbars=no,resizable=no,width='+w+',height='+h;
swin = window.open(page,wname,win_set);
}

function openwin_mobile(page,wname,w,h){
win_set = 'toolbar=no,location=0,directories=no,status=no,menubar=0,scrollbars=yes,resizable=no,width='+w+',height='+h;
swin = window.open(page,wname,win_set);
}

function openwinwinwin(page,wname,w,h){
win_set = 'toolbar=no,location=0,directories=no,status=no,menubar=0,scrollbars=yes,resizable=no,width='+w+',height='+h;
swin = window.open(page,wname,win_set);
}

function openwin_relevantsites(){
selectedsite = document.relevantsites.site.selectedIndex;
if (selectedsite) {
window.open(document.relevantsites.site.options[selectedsite].value);
}
}