function GetLAWidth()
{
	var winw = '794'
	if (screen.height > 830)
	{
		winw = '874';
	}
	else if (screen.height > 730)
	{
		winw = '874';
	}
	else if (screen.height < 400)
	{
		winw = '480';
	}
	return winw;
}
function GetLAHeight()
{
	var winh = '540'
	if (screen.height > 830)
	{
		winh = '770';
	}
	else if (screen.height > 730)
	{
		winh = '680';
	}
	else if (screen.height < 400)
	{
		winh = '500';
	}
	return winh;
}

function ValidateField(ctrl, ftype)
{
	if (ftype == 1)
	{	
		ExtractNumber(ctrl, 0, true);
	}
	if (ftype == 2)
	{	
		ExtractNumber(ctrl, 2, true);
	}
}

function ValidateKey(ctrl, ftype)
{
	if (ftype == 1)
	{	
		return BlockNonNumbers(ctrl, window.event, false, true);
	}
	if (ftype == 2)
	{	
		return BlockNonNumbers(ctrl, window.event, true, true);
	}
}

function ExtractNumber(obj, decimalPlaces, allowNegative)
{
	var temp = obj.value;
	
	// avoid changing things if already formatted correctly
	var reg0Str = '[0-9]*';
	if (decimalPlaces > 0) {
		reg0Str += '\\.?[0-9]{0,' + decimalPlaces + '}';
	} else if (decimalPlaces < 0) {
		reg0Str += '\\.?[0-9]*';
	}
	reg0Str = allowNegative ? '^-?' + reg0Str : '^' + reg0Str;
	reg0Str = reg0Str + '$';
	var reg0 = new RegExp(reg0Str);
	if (reg0.test(temp)) return true;

	// first replace all non numbers
	var reg1Str = '[^0-9' + (decimalPlaces != 0 ? '.' : '') + (allowNegative ? '-' : '') + ']';
	var reg1 = new RegExp(reg1Str, 'g');
	temp = temp.replace(reg1, '');

	if (allowNegative) {
		// replace extra negative
		var hasNegative = temp.length > 0 && temp.charAt(0) == '-';
		var reg2 = /-/g;
		temp = temp.replace(reg2, '');
		if (hasNegative) temp = '-' + temp;
	}
	
	if (decimalPlaces != 0) {
		var reg3 = /\./g;
		var reg3Array = reg3.exec(temp);
		if (reg3Array != null) {
			// keep only first occurrence of .
			//  and the number of places specified by decimalPlaces or the entire string if decimalPlaces < 0
			var reg3Right = temp.substring(reg3Array.index + reg3Array[0].length);
			reg3Right = reg3Right.replace(reg3, '');
			reg3Right = decimalPlaces > 0 ? reg3Right.substring(0, decimalPlaces) : reg3Right;
			temp = temp.substring(0,reg3Array.index) + '.' + reg3Right;
		}
	}
	
	obj.value = temp;
}
function BlockNonNumbers(obj, e, allowDecimal, allowNegative)
{
	var key;
	var isCtrl = false;
	var keychar;
	var reg;
		
	if(window.event) {
		key = e.keyCode;
		isCtrl = window.event.ctrlKey
	}
	else if(e.which) {
		key = e.which;
		isCtrl = e.ctrlKey;
	}
	
	
	if (isNaN(key)) return true;
	
	keychar = String.fromCharCode(key);
	
	// check for backspace or delete, or if Ctrl was pressed
	if (key == 8 || isCtrl)
	{
		return true;
	}

	reg = /\d/;
	var isFirstN = allowNegative ? keychar == '-' && obj.value.indexOf('-') == -1 : false;
	var isFirstD = allowDecimal ? keychar == '.' && obj.value.indexOf('.') == -1 : false;
	
	return isFirstN || isFirstD || reg.test(keychar);
}


// QueryString
function QueryString(key)
{
	var value = null;
	for (var i=0;i<QueryString.keys.length;i++)
	{
		if (QueryString.keys[i]==key)
		{
			value = QueryString.values[i];
			break;
		}
	}
	return value;
}

function QueryString_Set(key, value)
{
	for (var i=0;i<QueryString.keys.length;i++)
	{
		if (QueryString.keys[i]==key)
		{
			QueryString.values[i] = value;
			return;
		}
	}
	QueryString.keys[QueryString.keys.length] = key;
	QueryString.values[QueryString.values.length] = value;		
}

QueryString.keys = new Array();
QueryString.values = new Array();

function QueryString_Parse()
{
	var query = window.location.search.substring(1);
	var pairs = query.split("&");
	
	for (var i=0;i<pairs.length;i++)
	{
		var pos = pairs[i].indexOf('=');
		if (pos >= 0)
		{
			var argname = pairs[i].substring(0,pos);
			var value = pairs[i].substring(pos+1);
			QueryString.keys[QueryString.keys.length] = argname;
			QueryString.values[QueryString.values.length] = value;		
		}
	}
}
function GetUrl()
{
	url = window.location.protocol + "//" + window.location.host + window.location.pathname;
	if (QueryString.keys.length > 0)
	{
		for (var i=0;i<QueryString.keys.length;i++)
		{
			if (i == 0)
			{
				url = url + "?" + QueryString.keys[i] + "=" + QueryString.values[i];
			}
			else
			{
				url = url + "&" + QueryString.keys[i] + "=" + QueryString.values[i];
			}
		}
	}
	return url;
}

function replace(s, t, u) {
	i = s.indexOf(t);
	r = "";
	if (i == -1) return s;
	r += s.substring(0,i) + u;
	if ( i + t.length < s.length)
		r += replace(s.substring(i + t.length, s.length), t, u);
	return r;
}