Kod:	
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<script> 
function shortcut(shortcut,callback,opt) { 
//Provide a set of default options 
var default_options = { 
'type':'keydown', 
'propagate':false, 
'target':document 
} 
if(!opt) opt = default_options; 
else { 
for(var dfo in default_options) { 
if(typeof opt[dfo] == 'undefined') opt[dfo] = default_options[dfo]; 
} 
} 
var ele = opt.target 
if(typeof opt.target == 'string') ele = document.getElementById(opt.target); 
var ths = this; 
//The function to be called at keypress 
var func = function(e) { 
e = e || window.event; 
//Find Which key is pressed 
if (e.keyCode) code = e.keyCode; 
else if (e.which) code = e.which; 
var character = String.fromCharCode(code).toLowerCase(); 
var keys = shortcut.toLowerCase().split("+"); 
//Key Pressed - counts the number of valid keypresses - if it is same as the number of keys, the shortcut function is invoked 
var kp = 0; 
//Work around for stupid Shift key bug created by using lowercase - as a result the shift+num combination was broken 
var shift_nums = { 
"`":"~", 
"1":"!", 
"2":"@", 
"3":"#", 
"4":"$", 
"5":"%", 
"6":"^", 
"7":"&", 
"8":"*", 
"9":"(", 
"0":")", 
"-":"_", 
"=":"+", 
";":":", 
"'":"\"", 
",":"<", 
".":">", 
"/":"?", 
"\\":"|" 
} 
//Special Keys - and their codes 
var special_keys = { 
'esc':27, 
'escape':27, 
'tab':9, 
'space':32, 
'return':13, 
'enter':13, 
'backspace':8, 
'scrolllock':145, 
'scroll_lock':145, 
'scroll':145, 
'capslock':20, 
'caps_lock':20, 
'caps':20, 
'numlock':144, 
'num_lock':144, 
'num':144, 
'pause':19, 
'break':19, 
'insert':45, 
'home':36, 
'delete':46, 
'end':35, 
'pageup':33, 
'page_up':33, 
'pu':33, 
'pagedown':34, 
'page_down':34, 
'pd':34, 
'left':37, 
'up':38, 
'right':39, 
'down':40, 
'f1':112, 
'f2':113, 
'f3':114, 
'f4':115, 
'f5':116, 
'f6':117, 
'f7':118, 
'f8':119, 
'f9':120, 
'f10':121, 
'f11':122, 
'f12':123 
} 
for(var i=0; k=keys[i],i<keys.length; i++) { 
//Modifiers 
if(k == 'ctrl' || k == 'control') { 
if(e.ctrlKey) kp++; 
} else if(k == 'shift') { 
if(e.shiftKey) kp++; 
} else if(k == 'alt') { 
if(e.altKey) kp++; 
} else if(k.length > 1) { //If it is a special key 
if(special_keys[k] == code) kp++; 
} else { //The special keys did not match 
if(character == k) kp++; 
else { 
if(shift_nums[character] && e.shiftKey) { //Stupid Shift key bug created by using lowercase 
character = shift_nums[character]; 
if(character == k) kp++; 
} 
} 
} 
} 
if(kp == keys.length) { 
callback(e); 
if(!opt['propagate']) { //Stop the event 
//e.cancelBubble is supported by IE - this will kill the bubbling process. 
e.cancelBubble = true; 
e.returnValue = false; 
//e.stopPropagation works only in Firefox. 
if (e.stopPropagation) { 
e.stopPropagation(); 
e.preventDefault(); 
} 
return false; 
} 
} 
} 
//Attach the function with the event 
if(ele.addEventListener) ele.addEventListener(opt['type'], func, false); 
else if(ele.attachEvent) ele.attachEvent('on'+opt['type'], func); 
else ele['on'+opt['type']] = func; 
}; 
//x tuşuna basıldıysa çalıştır 
shortcut("CTRL", function(){window.close(); 
}); 
</script> 
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