var min=8; 
var max=20;
	 
function addLoadEvent(func) { 
  var oldonload = window.onload; 
  if (typeof window.onload != 'function') { 
	window.onload = func; 
  } else { 
	window.onload = function() { 
	  if (oldonload) { 
		oldonload(); 
	  } 
	  func(); 
	} 
  } 
} 
 
addLoadEvent(getSize); 
	 
function getSize()
{
	var p = document.getElementsByTagName('body'); 
	var s = '';
	s = Get_Cookie('fontSize');
	if (isNaN(parseInt(s)))
		s = 11;
	for(i=0;i<=p.length;i++) { 
		p[0].style.fontSize = s; 
	} 
}

function increaseFontSize() { 
 var p = document.getElementsByTagName('body'); 
 var t = document.getElementsByTagName('td'); 
 for(i=0;i<p.length;i++) { 
	if(p[i].style.fontSize) {
		var s = parseInt(p[i].style.fontSize.replace("px","")); 
		} else {
        	  var s = 11; 
		} 
 	if(s!=max) { 
		  s += 1; 
		} 
		p[i].style.fontSize = s+"px" 
		for (j=0;j<t.length;j++)
			t[j].style.fontSize = s+"px" 
		Set_Cookie('fontSize',s+'px', 30, '/', '', '' );
	} 
} 

function decreaseFontSize() { 
	var p = document.getElementsByTagName('body'); 
	var t = document.getElementsByTagName('td'); 
	for(i=0;i<p.length;i++) { 
		if(p[i].style.fontSize) { 
		   var s = parseInt(p[i].style.fontSize.replace("px","")); 
		} else { 
		   var s = 11; 
		} if(s!=min) { 
		   s -= 1; 
		} 
		p[i].style.fontSize = s+"px" 
		for (j=0;j<t.length;j++)
			t[j].style.fontSize = s+"px" 

		Set_Cookie('fontSize',s+'px', 30, '/', '', '' );
	} 
}

function Set_Cookie( name, value, expires, path, domain, secure )
{
	var today = new Date();
	today.setTime( today.getTime() );

	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 Get_Cookie( name ) {

	var start = document.cookie.indexOf( name + "=" );
	var len = start + name.length + 1;
	if ( ( !start ) &&
	( name != document.cookie.substring( 0, name.length ) ) )
	{
		return null;
	}
	if ( start == -1 ) return null;
	var end = document.cookie.indexOf( ";", len );
	if ( end == -1 ) end = document.cookie.length;
	return unescape( document.cookie.substring( len, end ) );
}

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";
}