function resizeText(multiplier) {   

	if (!document.getElementById) return
	var d = document,cEl = null,i,j,cTags;

	cEl= document.body; 
	szs = "0.75em";  
	
	if (cEl.style.fontSize == "" ) 
	{   
    document.body.style.fontSize = "0.75em";   
	szs = "0.75em";  
	}   
		// cTags = cEl.getElementsByTagName('iframe');
		// for ( j = 0 ; j < cTags.length ; j++ ) 
		// {
		// cTags[ j ].contentWindow.document.body.style.fontSize="0.75em";   
		// }
  
	if (multiplier != 0 ){
		if (multiplier>0)
		{
		szs = '1.1em';
		cEl.style.fontSize = '1.1em';
		}
		else
		{
		szs = '0.6em';
		cEl.style.fontSize = '0.6em';
		}
	}
	else
	{
		szs = "0.75em";
		cEl.style.fontSize = "0.75em";
	}

	
		// cTags = cEl.getElementsByTagName('iframe');
		// for ( j = 0 ; j < cTags.length ; j++ ) 
		// {
		// //alert(cTags[ j ].contentWindow.document.body.style.fontSize);
		// cTags[ j ].contentWindow.document.body.style.fontSize = szs;
		// //alert(cTags[ j ].contentWindow.document.body.style.fontSize);
		// }
	
	
 
   try{
	createCookie('textsize',document.body.style.fontSize,1);
	
		document.getElementById('plustext').src='http://www.eyeandear.org.au/library/images/gif/plus.gif';
		document.getElementById('plustext').disabled= false;
		document.getElementById('minustext').src='http://www.eyeandear.org.au/library/images/gif/minus.gif';
		document.getElementById('minustext').disabled= false;
		document.getElementById('plustext1').src='http://www.eyeandear.org.au/library/images/gif/plus.gif';
		document.getElementById('plustext1').disabled= false;
		document.getElementById('minustext1').src='http://www.eyeandear.org.au/library/images/gif/minus.gif';
		document.getElementById('minustext1').disabled= false;

		if (document.body.style.fontSize=="1.1em")
		{
		document.getElementById('plustext').src='http://www.eyeandear.org.au/library/images/gif/plus1.gif';
		document.getElementById('plustext').disabled= true;
		document.getElementById('plustext1').src='http://www.eyeandear.org.au/library/images/gif/plus1.gif';
		document.getElementById('plustext1').disabled= true;
		}
		if (document.body.style.fontSize=="0.6em")
		{
		document.getElementById('minustext').src='http://www.eyeandear.org.au/library/images/gif/minus1.gif';
		document.getElementById('minustext').disabled= true;
		document.getElementById('minustext1').src='http://www.eyeandear.org.au/library/images/gif/minus1.gif';
		document.getElementById('minustext1').disabled= true;
		}

	}catch(err)
	{}
	
}  

function gts()
{
try{
var sz = readCookie('textsize');
if (szs == '1.1em')
{resizeText(1);}
if (szs == '0.6em')
{resizeText(-1);}
if (szs == "0.75em")
{resizeText(0);}
}catch(err)
{}
}

function createCookie(name,value,days) {
	if (days) {
		var date = new Date();
		date.setTime(date.getTime()+(days*24*60*60*1000));
		var expires = "; expires="+date.toGMTString();
	}
	else var expires = "";
	document.cookie = name+"="+value+expires+"; path=/";
}

function readCookie(name) {
	var nameEQ = name + "=";
	var ca = document.cookie.split(';');
	for(var i=0;i < ca.length;i++) {
		var c = ca[i];
		while (c.charAt(0)==' ') c = c.substring(1,c.length);
		if (c.indexOf(nameEQ) == 0) return c.substring(nameEQ.length,c.length);
	}
	return null;
}

function eraseCookie(name) {
	createCookie(name,"",-1);
}


function HideUnHide(ele)
{
 if (document.getElementById(ele).style.display=='block')
 document.getElementById(ele).style.display='none';
 else
 document.getElementById(ele).style.display='block';
}