//글자 크기 크게/작게
defsize = 73;
function zoom_it(n) {

	defsize += n*10;

	objs = document.getElementsByTagName("body").item(0);

	objs.style.fontSize = defsize + "%";

}


//화면 크기 크게/작게
var maxZoom = 400;
var minZoom = 40;
var ZoomInterval = 20;
var ratio;

var lineRatio = 100;
var maxLine = 300;
var minLine = 100;
var LineUnit = 50;

function zoomInFont()
{
ratio = parseInt(document.getElementById("docBody").style.zoom);
if ( isNaN(ratio)) ratio=100;
if (ratio < maxZoom)
{
ratio = ratio + ZoomInterval;
document.getElementById("docBody").style.zoom = ratio+'%';
}
}

function zoomOutFont()
{
ratio = parseInt(document.getElementById("docBody").style.zoom);
if ( isNaN(ratio)) ratio=100;
if (ratio >minZoom)
{
ratio = ratio-ZoomInterval;
document.getElementById("docBody").style.zoom = ratio+'%';
}
}




function increaseLineHeight()
{
if (lineRatio < maxLine)
{
lineRatio = lineRatio + LineUnit;
setLineHeight();
}
}

function decreaseLineHeight()
{
if (lineRatio >minLine)
{
lineRatio = lineRatio-LineUnit;
setLineHeight();
}
}

function setLineHeight()
{
obj = document.getElementById("docBody");
obj.style.lineHeight = lineRatio+"%";
}