var prefsLoaded = false;
var defaultFontSize = 70;
var currentFontSize = defaultFontSize;

function revertStyles()
{
	currentFontSize = defaultFontSize;
	changeFontSize(0);
}

function changeFontSize(sizeDifference) {
	currentFontSize = parseInt(currentFontSize) + parseInt(sizeDifference * 5);

	if(currentFontSize > 85) {
		currentFontSize = 85;
	}
	else if(currentFontSize < 65) {
		currentFontSize = 65;
	}

	setFontSize(currentFontSize);
}

function setFontSize(fontSize) {
	document.body.style.fontSize = fontSize + '%';
	if(document.getElementById('menu1ul')) {
		if(fontSize >= 85) {
			if(IE) {
				document.getElementById('menu1ul').style.marginTop = "6px";
				document.getElementById('menu4ul').style.marginTop = "54px";
				if(document.getElementById('menu1img')) {
					document.getElementById('menu1img').style.marginTop = "0px";
				}
			}
			else {
				document.getElementById('menu1ul').style.marginTop = "5px";
				if(document.getElementById('menu1img')) {
					document.getElementById('menu1img').style.marginTop = "1px";
				}
			}
			
		}
		else if(fontSize >= 80) {
			if(IE) {
				document.getElementById('menu1ul').style.marginTop = "6px";
				document.getElementById('menu4ul').style.marginTop = "54px";
				if(document.getElementById('menu1img')) {
					document.getElementById('menu1img').style.marginTop = "0px";
				}
			}
			else {
				document.getElementById('menu1ul').style.marginTop = "5px";
				if(document.getElementById('menu1img')) {
					document.getElementById('menu1img').style.marginTop = "2px";
				}
			}
		}
		else if(fontSize >= 75) {
			if(IE) {
				document.getElementById('menu1ul').style.marginTop = "7px";
				document.getElementById('menu4ul').style.marginTop = "55px";
				if(document.getElementById('menu1img')) {
					document.getElementById('menu1img').style.marginTop = "0px";
				}
			}
			else {
				document.getElementById('menu1ul').style.marginTop = "5px";
				if(document.getElementById('menu1img')) {
					document.getElementById('menu1img').style.marginTop = "2px";
				}
			}
		}
		else if(fontSize <= 65) {
			if(IE) {
				document.getElementById('menu1ul').style.marginTop = "7px";
				document.getElementById('menu4ul').style.marginTop = "55px";
				if(document.getElementById('menu1img')) {
					document.getElementById('menu1img').style.marginTop = "1px";
				}
			}
			else { document.getElementById('menu1ul').style.marginTop = "7px"; }
			
		}
		else {
			document.getElementById('menu1ul').style.marginTop = "7px";
			document.getElementById('menu4ul').style.marginTop = "55px";
			if(document.getElementById('menu1img')) {
				document.getElementById('menu1img').style.marginTop = "1px";
			}
		}
	}
}

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 {
		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 setUserOptions() {
	if(!prefsLoaded) {
		cookie = readCookie("nordlbit");
		currentFontSize = cookie ? cookie : defaultFontSize;

		if(currentFontSize < 65 || currentFontSize > 85) {
			currentFontSize = defaultFontSize;
		}

		setFontSize(currentFontSize);

		prefsLoaded = true;
	}
}

function saveSettings() {
	createCookie("nordlbit", currentFontSize, 365);
}

window.onunload = saveSettings;