// global variable declaration for window object
var win_obj = null;

// this fixes an issue with the old method, ambiguous values
// with this test document.cookie.indexOf( name + "=" );
function Get_Cookie( check_name ) {
	// first we'll split this cookie up into name/value pairs
	// note: document.cookie only returns name=value, not the other components
	var a_all_cookies = document.cookie.split( ';' );
	var a_temp_cookie = '';
	var cookie_name = '';
	var cookie_value = '';
	var b_cookie_found = false; // set boolean t/f default f

	for ( i = 0; i < a_all_cookies.length; i++ )
	{
		// now we'll split apart each name=value pair
		a_temp_cookie = a_all_cookies[i].split( '=' );


		// and trim left/right whitespace while we're at it
		cookie_name = a_temp_cookie[0].replace(/^\s+|\s+$/g, '');

		// if the extracted name matches passed check_name
		if ( cookie_name == check_name )
		{
			b_cookie_found = true;
			// we need to handle case where cookie has no value but exists (no = sign, that is):
			if ( a_temp_cookie.length > 1 )
			{
				cookie_value = unescape( a_temp_cookie[1].replace(/^\s+|\s+$/g, '') );
			}
			// note that in cases where cookie is initialized but no value, null is returned
			return cookie_value;
			break;
		}
		a_temp_cookie = null;
		cookie_name = '';
	}
	if ( !b_cookie_found )
	{
		return null;
	}
}

// this deletes the cookie when called
function Delete_Cookie( name, path, domain ) {
if ( Get_Cookie( name ) ) document.cookie = name + "=" +
( ( path ) ? ";path=" + path : "") +
( ( domain ) ? ";domain=" + domain : "" ) +
";expires=Thu, 01-Jan-1970 00:00:01 GMT";
}

function LaunchCCChat()
{
	if(window.childW != null) 
		{childW.focus(); return false; } 
	
	//	var d =DetectFlashVersion(9);
	//	if(d){ 
		Delete_Cookie( 'vista[livehelpid]', '/', 'tutorvista.co.in' ); 
		childW = window.open('http://www.tutorvista.co.in/vista/helpchat/student/main.php?f=true','helpwindow','menubar=no,alwaysRaised=yes,dependent=yes,width=350,height=412,resizable=no','replace=true'); 
	//		} 
	//	else { 
	//	 window.open('http://www.tutorvista.co.in/vista/um/instant/flashinformation.php?f=no','helpwindow','menubar=no,alwaysRaised=yes,dependent=yes,width=350,height=412,resizable=no','replace=true');
	//	}
	return false;
}

function LaunchTHelpChat()
{
	var win_url 	=	"http://www.tutorvista.co.in/vista/login/cc_chatln.php";
	var win_name 	=	"tvhelpwindow";
	var win_params 	=	"menubar=no, alwaysRaised=yes, dependent=yes, width=350, height=412, scrollbars=no, resizable=no";
	var win_option	=	"replace=true";

	Delete_Cookie( 'vista[livehelpid]', '/', 'tutorvista.co.in' );
	var tvHelpW	=	window.open(win_url, win_name, win_params, win_option);
	tvHelpW.focus();
	return false;
}

function CCMailPopUp()
{
	var win_url 	=	"http://www.tutorvista.co.in/vista/mail/ccmail.php";
	var win_name 	=	"ccmailwindow";
	var win_params 	=	"menubar=no, alwaysRaised=yes, dependent=yes, width=350, height=375, scrollbars=no, resizable=no";
	var win_option	=	"replace=true";

	var ccMailWin	=	window.open(win_url, win_name, win_params, win_option);
	ccMailWin.focus();

	return false;
}

function LaunchUpsellChat()
{
	var win_url 	=	"http://www.tutorvista.co.in/vista/helpchat/student/main.php?f=true&careCategory=6";
	var win_name 	=	"tvhelpwindow";
	var win_params 	=	"menubar=no, alwaysRaised=yes, dependent=yes, width=350, height=412, scrollbars=no, resizable=no";
	var win_option	=	"replace=true";

	Delete_Cookie( 'vista[livehelpid]', '/', 'tutorvista.co.in' );
	var tvUpsellW	=	window.open(win_url, win_name, win_params, win_option);
	tvUpsellW.focus();
	return false;
}

function LaunchTNChat()
{
	var win_url 	=	"http://www.tutorvista.co.in/vista/helpchat/student/main.php?f=true";
	var win_name 	=	"tnchatwindow";
	var win_params 	=	"menubar=no, alwaysRaised=yes, dependent=yes, width=350, height=412, scrollbars=no, resizable=no";
	var win_option	=	"replace=true";

	Delete_Cookie( 'vista[livehelpid]', '/', 'tutorvista.co.in' );
	var tnChatW	=	window.open(win_url, win_name, win_params, win_option);
	tnChatW.focus();
	return false;
}

function LaunchCancellationChat()
{
	var win_url 	=	"http://www.tutorvista.co.in/vista/helpchat/student/main.php?f=true&careCategory=7";
	var win_name 	=	"tvhelpwindow";
	var win_params 	=	"menubar=no, alwaysRaised=yes, dependent=yes, width=350, height=412, scrollbars=no, resizable=no";
	var win_option	=	"replace=true";

	Delete_Cookie( 'vista[livehelpid]', '/', 'tutorvista.co.in' );
	var tvUpsellW	=	window.open(win_url, win_name, win_params, win_option);
	tvUpsellW.focus();
	return false;
}

/*
 * Added by Pavan
 * To launch chat for the given url, name, params, option
 * @param string win_url 	- url for launching chat
 * @param string win_name 	- name for window
 * @param string win_params	- window properties
 * @param string win_option	- replace=true; URL replaces the current document opened in the history list
*/
function launchChat(win_url, win_name, win_params, win_option)
{

	if (win_obj != null && win_obj.closed)
	{
		// Setting win_obj value to null, if window is closed
		win_obj = null;
	}

	if (win_url == null || win_url == undefined)
	{
		// Default url, if win_url parameter is empty
		win_url	= "http://www.tutorvista.co.in/vista/helpchat/student/main.php?f=true";
	}

	if (win_name == null || win_name == undefined)
	{
		// Default window name, if win_name parameter is empty
		win_name	= "chatWindow";
	}

	if (win_params == null || win_params == undefined)
	{
		// Default window properties, if win_params parameter is empty
		win_params	= "menubar=no, alwaysRaised=yes, dependent=yes, width=350, height=412, scrollbars=no, resizable=no";
	}

	if (win_option == null || win_option == undefined)
	{
		// Default window replace=true, if win_option parameter is empty
		win_option	= "replace=true";
	}
 
	Delete_Cookie( 'vista[livehelpid]', '/', 'tutorvista.co.in' );

	if (win_obj == null)
	{
		// Open a new window for the given url, params..etc
		win_obj	= window.open(win_url, win_name, win_params, win_option);
	}
	else if(win_obj != null)
	{
		// Focus the existing window, if already window is opened.
		win_obj.focus();
	}

	return false;
}

function launchMailWindow(win_url, win_name, win_params, win_option)
{
	if (win_obj != null && win_obj.closed)
	{
		// Setting win_obj value to null, if window is closed
		win_obj = null;
	}

	if (win_url == null || win_url == undefined)
	{
		// Default url, if win_url parameter is empty
		win_url	= "http://www.tutorvista.co.in/vista/helpchat/student/main.php?f=true";
	}

	if (win_name == null || win_name == undefined)
	{
		// Default window name, if win_name parameter is empty
		win_name	= "chatWindow";
	}

	if (win_params == null || win_params == undefined)
	{
		// Default window properties, if win_params parameter is empty
		win_params	= "menubar=no, alwaysRaised=yes, dependent=yes, width=775, height=512, scrollbars=no, resizable=no";
	}

	if (win_option == null || win_option == undefined)
	{
		// Default window replace=true, if win_option parameter is empty
		win_option	= "replace=true";
	}

	Delete_Cookie( 'vista[livehelpid]', '/', 'tutorvista.co.in' );
	if (win_obj == null)
	{
		// Open a new window for the given url, params..etc
		win_obj	= window.open(win_url, win_name, win_params, win_option);
	}
	else if(win_obj != null)
	{
		// Focus the existing window, if already window is opened.
		win_obj.focus();
	}

	return false;
}

/*
 * Added by Varun
 * To launch chat for the given url, name, params, option
 * @param string win_url 	- url for launching chat
 * @param string win_name 	- name for window
 * @param string win_params	- window properties
 * @param string win_option	- replace=true; URL replaces the current document opened in the history list
*/
function launchChatET(win_url, win_name, win_params, win_option)
{

	//var win_host 	=	"TV";
	var win_time	= "01";
	var win_day		= "Sun";	
	
	if (win_obj != null && win_obj.closed)
	{
		// Setting win_obj value to null, if window is closed
		win_obj = null;
	}

	if (win_url == null || win_url == undefined)
	{
		// Default url, if win_url parameter is empty
		win_url	= "http://www.tutorvista.co.in/vista/helpchat/student/main.php?f=true";
	}

	if (win_name == null || win_name == undefined)
	{
		// Default window name, if win_name parameter is empty
		win_name	= "chatWindow";
	}
	
	if (win_params == null || win_params == undefined)
	{
		if(win_time < 19 && win_time > 3 || win_day == 'Sun' || ( win_day == 'Sat' && win_time < 24 && win_time > 3 )|| ( win_day == 'Mon' && win_time < 19)){
		//if((win_host == 'ET') && (win_time < 19 && win_time > 4 || win_day == 'Sun' || win_day == 'Sat')){
		// Default window properties, if win_params parameter is empty
		win_params	= "menubar=no, alwaysRaised=yes, dependent=yes, width=662, height=520, scrollbars=no, resizable=no";
		}
		else{
		win_params	= "menubar=no, alwaysRaised=yes, dependent=yes, width=350, height=412, scrollbars=no, resizable=no";
		}
	}
		

	if (win_option == null || win_option == undefined)
	{
		// Default window replace=true, if win_option parameter is empty
		win_option	= "replace=true";
	}
 
	Delete_Cookie( 'vista[livehelpid]', '/', 'tutorvista.co.in' );

	if (win_obj == null)
	{
		// Open a new window for the given url, params..etc
		win_obj	= window.open(win_url, win_name, win_params, win_option);
	}
	else if(win_obj != null)
	{
		// Focus the existing window, if already window is opened.
		win_obj.focus();
	}

	return false;
}