// JavaScript Document

/*******************************************************************
* JavaScript/CSS Font Size Changer (Persistent Between Pages)
* (c) DB Design, All rights are reserved
* http://phpscriptindex.com, phpsales@gmail.com
********************************************************************
* Script will allow user to visually change font size. Font size 
* will persist thru page change using a cookie.
********************************************************************
* Directions: Change fontElementId var to the element id you wish to
* allow users to change font sizes. 
********************************************************************
* Tip: Next span element inside normal div to inherit parent style
* but enable use to change font size.
*******************************************************************
* FireFox 2.0.0.3 Tested
* MS IE 7 Tested
* Netscape 8.1.2 Tested
* Opera 9.1 Tested
******************************************************************/

var fontElementId = "content"; //CHANGE ME TO YOUR ELEMENT ID

var smallFont=11;
var mediumFont=13;
var largeFont=15;

//DO NOT MODIFY BELOW

/* Module Change Font (string) */
function changeFont(fontClass){	
	
	els=document.getElementById('content').getElementsByTagName('p');
	for (i=0;i<els.length;i++)
	{
			els[i].className=fontClass;					
	} 
	
	els=document.getElementById('content').getElementsByTagName('tbody');
	for (i=0;i<els.length;i++)
	{
			els[i].className=fontClass;					
	} 

	el=document.getElementById('content');
	
	
	switch (fontClass)
	{
		case "small_font":
			el.style.fontSize=smallFont;
			break;
		case "medium_font":
			el.style.fontSize=mediumFont;
			break;
		case "large_font":
			el.style.fontSize=largeFont;
			break;
	}
	
	



/*	els=document.getElementById('content').getElementsByTagName('div');
	for (i=0;i<els.length;i++)
	{
			els[i].className=fontClass;					
	} */
		
	//el=document.getElementById('content');
	//el.clasName=fontClass;
	
/*	for (i=0;i<els.length;i++)
	{
			els[i].className=fontClass;					
	}

	els=document.getElementsByTagName("table");

	for (i=0;i<els.length;i++)
	{
			els[i].className=fontClass;					
	}

	els=document.getElementsByTagName("tbody");

	for (i=0;i<els.length;i++)
	{
			els[i].className=fontClass;					
	}

	els=document.getElementsByTagName("td");

	for (i=0;i<els.length;i++)
	{
			els[i].className=fontClass;					
	}

	els=document.getElementsByTagName("th");

	for (i=0;i<els.length;i++)
	{
			els[i].className=fontClass;					
	}

	els=document.getElementsByTagName("div");

	for (i=0;i<els.length;i++)
	{
			els[i].className=fontClass;					
	} */

	//var element = document.body;
	//getElementById(fontElementId);
	//element.className = fontClass;
	//name, value, expires, path, domain, secure
	setCookie("fontSize", fontClass, 5,"/","",0);
}		

/* Module Set Default Font Size (void) */
function setDefaultFontSize(){
	
	var fontSize = getCookie("fontSize")
	
	if(fontSize){
		changeFont(fontSize);
	}

	
	
}

/* Module Set Cookie (string, string, int) -- http://www.w3schools.com/js/js_cookies.asp */


function setCookie( name, value, expires, path, domain, secure ) 
{
// set time, it's in milliseconds
var today = new Date();
today.setTime( today.getTime() );

/*
if the expires variable is set, make the correct 
expires time, the current script below will set 
it for x number of days, to make it for hours, 
delete * 24, for minutes, delete * 60 * 24
*/
if ( expires )
{
expires = expires * 1000 * 60 * 60 * 24;
}
var expires_date = new Date( today.getTime() + (expires) );

document.cookie = name + "=" +escape( value ) +
( ( expires ) ? ";expires=" + expires_date.toGMTString() : "" ) + 
( ( path ) ? ";path=" + path : "" ) + 
( ( domain ) ? ";domain=" + domain : "" ) +
( ( secure ) ? ";secure" : "" );
}

/* function setCookie(c_name,value,expiredays){
	var exdate=new Date();
	exdate.setDate(exdate.getDate()+expiredays);
	document.cookie=c_name+ "=" +escape(value)+ ((expiredays==null) ? "" : ";expires="+exdate.toGMTString());
} */
/* Module Get Cookie (string) -- http://www.w3schools.com/js/js_cookies.asp */


function getCookie( 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;
	}
}


/* function getCookie(c_name){
	if(document.cookie.length>0){
		c_start=document.cookie.indexOf(c_name + "=");
		if (c_start!=-1){ 
			c_start=c_start + c_name.length+1;
			c_end=document.cookie.indexOf(";",c_start);
			if (c_end==-1) c_end=document.cookie.length;
			return unescape(document.cookie.substring(c_start,c_end));
		}
	}
	return false;
} */