var textsize = 100;
addLoadEvent(function() {

	var cookie_textsize = readCookie('hta_font_size');

	if(cookie_textsize){
		document.body.style.fontSize = cookie_textsize+"%";	
		textsize = cookie_textsize;
	}

	if(document.getElementById){
		

		var larger = document.getElementById("text-larger");
		var smaller = document.getElementById("text-smaller");
		

		larger.onclick = function(){
			changetextsize(1);
			return false;
		}
		
		smaller.onclick = function(){
			changetextsize(0);
			return false;
		}
		//alert("Events attached");

	}
	else
	{
		//alert("Events could not be attached");
	}

})

function addLoadEvent(func) {
    var oldonload = window.onload;
    if (typeof window.onload != 'function') {
        window.onload = func;
    } else {
        window.onload = function() {
            if (oldonload) {
                oldonload();
            }
            func();
        }
    }
}


function changetextsize(up){
	if(up && textsize<150){
		textsize = parseFloat(textsize)+10;
	}
	if(!up && textsize>50){
		textsize = parseFloat(textsize)-10;
	}
	
	document.body.style.fontSize = textsize+"%";
	
	createCookie('hta_font_size', textsize, 365);
	
}

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;
}