document.onclick = function(e){
document.onclick = function(e){
alert(getKey (e));
};
function getKey(e){
var e = e || window.event;
var keys = [];
if(e .shiftKey){
keys.push("shift鍵");
};
if(e.ctrlKey){
keys.push("ctrl鍵");
};
if(e.altKey){
keys.push("alt鍵");
};
return keys;
};
