var prefsLoaded = false;
var defaultfontSizePOW = 75;
var currentfontSizePOW = defaultfontSizePOW;


function revertStyles()
{
	currentfontSizePOW = defaultfontSizePOW;
	//changefontSizePOW(0);
	setfontSizePOW(currentfontSizePOW);
}

function changeFontSize(typ)
{
	/*currentfontSizePOW = parseInt(currentfontSizePOW) + parseInt(sizeDifference * 5);*/
	if (typ=='-')
	{
	    if(currentfontSizePOW>60)
		{
		    currentfontSizePOW = currentfontSizePOW - 5;
		}
	}
	if (typ=='+')
	{
	    if(currentfontSizePOW<=150)
		{
		    currentfontSizePOW = currentfontSizePOW + 5;
		}
	}
	if (typ=='0')
	{
	    currentfontSizePOW = defaultfontSizePOW;
	}

	setfontSizePOW(currentfontSizePOW);
	saveSettings();
};

function setfontSizePOW(currentfontSizePOW)
{
	var panel = document.getElementById('www_site_basic');
	panel.style.fontSize = currentfontSizePOW + '%';
}


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;
};

window.onload = setUserOptions;

function setUserOptions()
{	
    cookie_font = parseInt(readCookie("fontSizePOW"));
	currentfontSizePOW = cookie_font ? cookie_font : defaultfontSizePOW;
	setfontSizePOW(currentfontSizePOW);			
}

function saveSettings()
{
    createCookie("fontSizePOW", currentfontSizePOW, 365);setUserOptions();
}