/*==============================================================================================================*/
/*
Date created:       02 Feb 2007
Modify Date:		18 Jan 2011
*/
/*==============================================================================================================*/


/* Function to set Picker Departure date based on selection made through Calendar*/
function bkg1_onCalendarChange(calendar)
{
	bkg1_Picker1.SetSelectedDate(bkg1_Calendar1.GetSelectedDate());
}

/*=====End of Calendar & Picker JavaScript functions===========================================================*/

/* 
The following function will show and hide content by wrapping the content inside the div tag. The name of 
the div tag has to be unique. 
*/
function showBlock(objSender, objBlockName)
{
	try
	{
		if(objSender.checked)
		{
			if(document.getElementById(objBlockName) != null)
			{
				document.getElementById(objBlockName).style.display = "none";
			}
		}
		else
		{
			if(document.getElementById(objBlockName) != null)
			{
				document.getElementById(objBlockName).style.display = "block";
			}		
		}
	}
	catch(e)
	{
	}
}

function HideBlock(objSender, objBlockName)
{
	try
	{
		if(objSender.checked)
		{
			if(document.getElementById(objBlockName) != null)
			{
				document.getElementById(objBlockName).style.display = "block";
			}
		}
		else
		{
			if(document.getElementById(objBlockName) != null)
			{
				document.getElementById(objBlockName).style.display = "none";
			}		
		}
	}
	catch(e)
	{
	}
}

/* 
	Function to show dynamic content ends Here.............
*/

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);
}