﻿function foo(px, py, pw, ph, baseElement, fid) {
	var win = document.getElementById(this.fid);
}


function dropdown_menu_hack(el) {
	if (el.runtimeStyle===undefined) {
		return;
	}
	
	if (el.runtimeStyle.behavior.toLowerCase() === "none") {
		return;
	}

	el.runtimeStyle.behavior = "none";

	var ie5 = (document.namespaces == null);
	el.ondblclick = function (e) {
		window.event.returnValue = false;
		return false;
	}

	if (window.createPopup === null) {
		var fid = "dropdown_menu_hack_" + Date.parse(new Date());
		window.createPopup = function () {
			if (window.createPopup.frameWindow === null) {
				el.insertAdjacentHTML("AfterEnd", "<iframe id='" + fid + "' name='" + fid + "' src='about:blank' frameborder='1' scrolling='no'></></iframe>");
				var f = document.frames[fid];
				f.document.open();
				f.document.write("<html><body></body></html>");
				f.document.close();
				f.fid = fid;

				var fwin = document.getElementById(fid);
				fwin.style.cssText = "position:absolute;top:0;left:0;display:none;z-index:99999;";

				f.show = function (px, py, pw, ph, baseElement) {
					py = py + baseElement.getBoundingClientRect().top + Math.max(document.body.scrollTop, document.documentElement.scrollTop);
					px = px + baseElement.getBoundingClientRect().left + Math.max(document.body.scrollLeft, document.documentElement.scrollLeft);
					fwin.style.width = pw + "px";
					fwin.style.height = ph + "px";
					fwin.style.posLeft = px;
					fwin.style.posTop = py;
					fwin.style.display = "block";
				}

				f_hide = function (e) {
					if (window.event && window.event.srcElement && window.event.srcElement.tagName && window.event.srcElement.tagName.toLowerCase() == "select") {
						return true;
					}

					fwin.style.display = "none";
				}

				f.hide = f_hide;

				document.attachEvent("onclick", f_hide);
				document.attachEvent("onkeydown", f_hide);
			}
			return f;
		}
	}

	function showMenu() {

		function selectMenu(obj) {
			var o = document.createElement("option");
			o.innerHTML = obj.innerHTML;
			o.value = obj.getAttribute('v') || '';
			while (el.options.length > 0) {
				el.options[0].removeNode(true);
			}
			el.appendChild(o);
			el.title = o.innerHTML;
			el.contentIndex = obj.selectedIndex;
			el.menu.hide();
		}

		el.menu.show(0, el.offsetHeight, 10, 10, el);
		var mb = el.menu.document.body;

		mb.style.cssText = "border:solid 1px black;margin:0;padding:0;overflow-y:auto;overflow-x:auto;background:white;text-aligbn:center;font-family:Verdana;font-size:12px;";
		var t = el.contentHTML;
		t = t.replace(/<select/gi, '<ul');
		t = t.replace(/<option/gi, '<li');
		t = t.replace(/<\/option/gi, '</li');
		t = t.replace(/<\/select/gi, '</ul');
		t = t.replace(/\bvalue\s*=\s*\x22([\s\S]*?)\x22/gi, 'v="$1"');
		t = t.replace(/\bvalue\s*=([\s\S]+?)([\x20>])/gi, 'v="$1"$2');
		mb.innerHTML = t;

		el.select = mb.all.tags("ul")[0];
		el.select.style.cssText = "list-style:none;margin:0;padding:0;";
		mb.options = el.select.getElementsByTagName("li");

		for (var i = 0; i < mb.options.length; i++) {
			mb.options[i].selectedIndex = i;
			mb.options[i].style.cssText = "list-style:none;margin:0;padding:1px 2px;width/**/:100%;cursor:hand;cursor:pointer;white-space:nowrap;"
			mb.options[i].title = mb.options[i].innerHTML;
			mb.options[i].innerHTML = "<nobr>" + mb.options[i].innerHTML + "</nobr>";
			mb.options[i].onmouseover = function () {
				if (mb.options.selected) {
					mb.options.selected.style.background = "white";
					mb.options.selected.style.color = "black";
				}
				mb.options.selected = this;
				this.style.background = "#426DDE";
				this.style.color = "white";
			}

			mb.options[i].onmouseout = function () {
				this.style.background = "white";
				this.style.color = "black";
			}
			mb.options[i].onmousedown = function () {
				selectMenu(this);
			}
			mb.options[i].onkeydown = function () {
				selectMenu(this);
			}


			if (i == el.contentIndex) {
				mb.options[i].style.background = "#426DDE";
				mb.options[i].style.color = "white";
				mb.options.selected = mb.options[i];
			}
		}


		var mw = Math.max((el.select.offsetWidth + 22), el.offsetWidth + 22);
		mw = Math.max(mw, (mb.scrollWidth + 22));
		var mh = mb.options.length * 15 + 8;

		var mx = (ie5) ? -3 : 0;
		var my = el.offsetHeight - 2;
		var docH = document.documentElement.offsetHeight;
		var bottomH = docH - el.getBoundingClientRect().bottom;

		mh = Math.min(mh, Math.max((docH - el.getBoundingClientRect().top - 50), 100));

		if ((bottomH < mh)) {

			mh = Math.max((bottomH - 12), 10);
			if (mh < 100) {
				my = -100;

			}
			mh = Math.max(mh, 100);
		}


		self.focus();

		el.menu.show(mx, my, mw, mh, el);
		sync = null;
		if (mb.options.selected) {
			mb.scrollTop = mb.options.selected.offsetTop;
		}




		window.onresize = function () {
			el.menu.hide()
		};
	}

	function switchMenu() {
		if (event.keyCode) {
			if (event.keyCode == 40) {
				el.contentIndex++;
			}
			else if (event.keyCode == 38) {
				el.contentIndex--;
			}
		}
		else if (event.wheelDelta) {
			if (event.wheelDelta >= 120) el.contentIndex++;
			else if (event.wheelDelta <= -120) el.contentIndex--;
		} else {
			return true;
		}




		if (el.contentIndex > (el.contentOptions.length - 1)) {
			el.contentIndex = 0;
		}
		else if (el.contentIndex < 0) {
			el.contentIndex = el.contentOptions.length - 1;
		}

		var o = document.createElement("option");
		o.value = el.contentOptions[el.contentIndex].value;
		o.innerHTML = el.contentOptions[el.contentIndex].text;
		while (el.options.length > 0) {
			el.remove(0);
		}
		el.appendChild(o);
		el.title = o.innerHTML;
	}

	if (dropdown_menu_hack.menu == null) {
		dropdown_menu_hack.menu = window.createPopup();
		document.attachEvent("onkeydown", dropdown_menu_hack.menu.hide);
	}
	el.menu = dropdown_menu_hack.menu;
	el.contentOptions = new Array();
	el.contentIndex = el.selectedIndex;
	el.contentHTML = el.outerHTML;

	for (var i = 0; i < el.options.length; i++) {
		el.contentOptions[el.contentOptions.length] = {
			"value": el.options[i].value,
			"text": el.options[i].innerHTML
		}

		if (!el.options[i].selected) {
			el.options[i].removeNode(true);
			i--;
		};
	}


	el.onkeydown = switchMenu;
	el.onclick = showMenu;
	el.onmousewheel = switchMenu;

}
