function popup_win($url, $win_w, $win_h, $title, $scroll, $resize)
{
	var $pos_x = (screen.availWidth/2)  - (($win_w/2)+10);
	var $pos_y = (screen.availHeight/2) - (($win_h/2)-10);

	if($pos_x<=0)$pos_x = 1;
	if($pos_y<=0)$pos_y = 1;
	if($scroll)$scroll  = 'yes'; else $scroll = 'no';
	if($resize)$resize  = 'yes'; else $resize = 'no';
	var $s   = ',top=' + $pos_y + ',left=' + $pos_x + ',width=' + $win_w + ',height=' + $win_h + ',scrollbars=' + $scroll + ',resizable=' + $resize;
	var $win = window.open($url, $title, 'toolbar=no,location=no,directories=no,status=no,menubar=no,copyhistory=no' + $s);
	$win.focus();

	return false;
}

function toggle_id($id, $show, $display_mode)
{
	if($display_mode)var $state = $show?$display_mode:'none';
	else var $state = $show?'block':'none';

	if(document.getElementById)document.getElementById($id).style.display = $state; // DOM3 = IE5, NS6
	else
	{
		if(document.layers)document.$id.display = $state; // Netscape 4
		else document.all.$id.style.display = $state; // IE 4
	}
}
/*

// Detect browser
var BrowserDetect = {
	init: function () {
		this.browser = this.searchString(this.dataBrowser) || "An unknown browser";
		this.version = this.searchVersion(navigator.userAgent)
			|| this.searchVersion(navigator.appVersion)
			|| "an unknown version";
		this.OS = this.searchString(this.dataOS) || "an unknown OS";
	},
	searchString: function (data) {
		for (var i=0;i<data.length;i++)	{
			var dataString = data[i].string;
			var dataProp = data[i].prop;
			this.versionSearchString = data[i].versionSearch || data[i].identity;
			if (dataString) {
				if (dataString.indexOf(data[i].subString) != -1)
					return data[i].identity;
			}
			else if (dataProp)
				return data[i].identity;
		}
	},
	searchVersion: function (dataString) {
		var index = dataString.indexOf(this.versionSearchString);
		if (index == -1) return;
		return parseFloat(dataString.substring(index+this.versionSearchString.length+1));
	},
	dataBrowser: [
		{ 	string: navigator.userAgent,
			subString: "OmniWeb",
			versionSearch: "OmniWeb/",
			identity: "OmniWeb"
		},
		{
			string: navigator.vendor,
			subString: "Apple",
			identity: "Safari"
		},
		{
			prop: window.opera,
			identity: "Opera"
		},
		{
			string: navigator.vendor,
			subString: "iCab",
			identity: "iCab"
		},
		{
			string: navigator.vendor,
			subString: "KDE",
			identity: "Konqueror"
		},
		{
			string: navigator.userAgent,
			subString: "Firefox",
			identity: "Firefox"
		},
		{
			string: navigator.vendor,
			subString: "Camino",
			identity: "Camino"
		},
		{		// for newer Netscapes (6+)
			string: navigator.userAgent,
			subString: "Netscape",
			identity: "Netscape"
		},
		{
			string: navigator.userAgent,
			subString: "MSIE",
			identity: "Explorer",
			versionSearch: "MSIE"
		},
		{
			string: navigator.userAgent,
			subString: "Gecko",
			identity: "Mozilla",
			versionSearch: "rv"
		},
		{ 		// for older Netscapes (4-)
			string: navigator.userAgent,
			subString: "Mozilla",
			identity: "Netscape",
			versionSearch: "Mozilla"
		}
	],
	dataOS : [
		{
			string: navigator.platform,
			subString: "Win",
			identity: "Windows"
		},
		{
			string: navigator.platform,
			subString: "Mac",
			identity: "Mac"
		},
		{
			string: navigator.platform,
			subString: "Linux",
			identity: "Linux"
		}
	]

};
BrowserDetect.init();
*/