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;
}