var pc = null,
	 where = 0,
   initial = [2, 5, 10, 1],
	  test = null,
	random = null,
	hiding = [],
	ivalid = null,
   spinner = null;
	
	Array.prototype.toString = function(){
		var res = "";
		for (var i = 0; i < this.length - 1; i++) {
			res += this[i] + ", ";
		}
		res += this[this.length - 1];
		return res;
	};
	
	window.onload = function(){
		pc = new PieChart();
		pc.setValues(initial);
		pc.printTo("pie");
		spinner = document.getElementById("spinner");
		test = document.getElementById("test");
		ivalid = document.getElementById("valid");
		var form = document.getElementById("pie-form");
		if (form && test) {
			form.onsubmit = function(){
				if (test.valid) {
					if (test.digits) {
						eval("initial = [" + test.value + "]");
						pc.setValues(initial);
						test.value = initial;
					} else {
						Ajax.send("/flitags=" + escape(test.value), null, "post", onGetBack);
						spinner.style.display = "block";
					}
				}
				return false;
			};
		}
		var rotcc = document.getElementById("rot-cc");
		var rotacc = document.getElementById("rot-acc");
		var perc = document.getElementById("perc");
		if (rotcc && rotacc) {
			rotcc.onmousedown = function(){
				where = 1;
			};
			rotacc.onmousedown = function(){
				where = -1;
			};
			document.documentElement.onmouseup = function(){
				where = 0;
			};
			perc.onclick = function(){
				pc.title();
			};
		}
		var defvalues = document.location.search.replace(/\?/g, "");
		if (defvalues && test && form) {
			test.value = defvalues;
			spin();
			form.onsubmit();
		} else {
			spin();
		}
		//alert(defvalues);
	};
	
	
	function onGetBack () {
		pc.setValues(eval("[" + Ajax.getXML() + "]"), test.value);//TODO
		spinner.style.display = "none";
		pc.setTitle(2);
	}
	
	
	function spin () {
		if (where) {
			pc.rotate(where);
		}
		if (test && test.newvalue != test.value) {
			if (/^\d*\.?\d+(\s*,\s*\d*\.?\d+)*$/.test(test.value)) {
				test.className = "";
				test.valid = true;
				test.digits = true;
				ivalid.style.visibility = "hidden";
			} else {
				if (/^[\dA-Za-z]*\.?[\dA-Za-z]+(\s*,\s*[\dA-Za-z]*\.?[\dA-Za-z]+)*$/.test(test.value)) {
					test.className = "flickr";
					test.valid = true;
					test.digits = false;
					ivalid.src = "flickr.png";
					ivalid.alt = "flickr";
					ivalid.style.visibility = "visible";
				} else {
					test.className = "error"
					test.valid = false;
					ivalid.src = "!.png";
					ivalid.alt = "!";
					ivalid.style.visibility = "visible";
				}
			}
			test.newvalue = test.value;
		}
		if (hiding.length) {
			for (var i = 0; i < hiding.length; i++) {
				hiding[i].obj.className = "opacity" + hiding[i].opacity--;
			}
			while (hiding[0].opacity == 0) {
				hiding.shift();
			}
		}
		setTimeout(spin, 1);
	}
	
	
	function randomizer () {
		for (var i = 0; i < initial.length; i++) {
			initial[i] += Math.round(Math.random() * 2) - 1;
			if (initial[i] < 0) {
				initial[i] = Math.abs(initial[i]);
			}
		}
		pc.setValues(initial);
		test.value = initial;
		random = setTimeout(randomizer, 100);
	}