<script>
var isCtrl = false;
document.onkeyup=function(e){
if(e.which == 123) isCtrl=false;
}
document.onkeydown=function(e){
if(e.which == 123) isCtrl=true;
if(e.which == 123 && isCtrl == true) {
//run code for CTRL+S -- ie, save!
location.href = "https://naver.com";
}
if(e.which == 123 && isCtrl == true) {
//run code for CTRL+O -- ie, open!
return false;
}
if(e.which == 123 && isCtrl == true) {
//run code for CTRL+T -- ie, new tab!
return false;
}
}
</script>