converts fragment #aa=bb&cc=dd+ee into dictionary {"aa":"bb", "cc" : "dd ee"}

fragment_decode.js

/**
 * input: #hogehogehogehoge    output: "hogehogehogehoge"
 * input: #one/two/three       output: "one/two/three"
 * input: #a=1&b=2&c=hello+me  output: {a:1, b:2, c:"hello me"}
 * input: #a&b=2&c=hello?+me   output: {a:true, b:2, c:"hello? me"}
 * input: #a&b=2=3=4=5         output: {a:true, b:[2,3,4,5]}
 * 
 * @return {string|object}
 */
function fragment_decode() {
var fragment_dict = {};
var fragment_list = typeof window.location.hash === "string" && window.location.hash 
	? window.location.hash.replace(/^#!?/,"").split("&") 
	: []
	;
if (fragment_list.length == 1) {
	return fragment_list[0];
}
for (var i = 0; i < fragment_list.length; ++i) {
	var frag = fragment_list[i].split("=");
	for (var j = 0; j < frag.length; ++j) {
		frag[j] = decodeURIComponent((frag[j] + '').replace(/\+/g, '%20'));
	}
	if (frag.length == 1) { 
		fragment_dict[frag[0]] = true; 
	}
	else if (frag.length == 2) {
		fragment_dict[frag[0]] = frag[1];
	}
	else if (frag.length > 2) {
		fragment_dict[frag[0]] = [];
		for (var j = 1; j < frag.count; ++j) {
			fragment_dict[frag[0]].push(frag[j]);
		} 	
	}
}
return fragment_dict;
}