/*****Zoom In & Zoom Out Script*****/

var zoomRate = 3;			// 확대/축소시 증감률
var maxRate = 300;			//최대확대률
var minRate = 100;			//최소축소률

function GetCookie(name){
	if (document.cookie != "") {
		zoomc = document.cookie.split("; ");
		for (var i=0; i < zoomc.length; i++) {
			zoomv = zoomc[i].split("="); 
			if (zoomv[0] == name) {
				return  unescape(zoomv[1]);
			}
		}        
	}else{
		return "";
	}
}

function SetCookie(name,value){
	document.cookie = name + "=" + escape (value)+";";
}

function GoZoom(contentid){
	if(GetCookie("zoomVal") != null && GetCookie("zoomVal") != ""){
		document.all[contentid].style.zoom = GetCookie("zoomVal");
		currZoom=GetCookie("zoomVal");
	}
	else{
		document.all[contentid].style.zoom = '100%'; 
		currZoom = '100%';
	}
}

//Zoom In & Zoom Out
function zoomInOut(contentid, how) {
	var clintName = navigator.appName;
	if(clintName.indexOf("Netscape") > -1) {
		alert("사용하시는 브라우저는 컨트롤키와 마우스휠을 활용하여 확대/축소 하실 수 있습니다. \n\n컨트롤키와 숫자0을 누르시면 원래크기로 보실 수 있습니다.");
		return  false;
	}

	if(GetCookie("zoomVal") != null && GetCookie("zoomVal") != ""){
		document.all[contentid].style.zoom = GetCookie("zoomVal");
		currZoom=GetCookie("zoomVal");
	}
	else{
		document.all[contentid].style.zoom = '100%'; 
		currZoom = '100%';
	}
	if (((how == "in") && (parseInt(currZoom) >= maxRate)) || ((how == "out") && (parseInt(currZoom) <= minRate)) ) {
		return; 
	}
	if (how == "in") {
		document.all[contentid].style.zoom = parseInt(document.all[contentid].style.zoom)+zoomRate+'%'
	}
	else {
		document.all[contentid].style.zoom = parseInt(document.all[contentid].style.zoom)-zoomRate+'%'
	}
	SetCookie("zoomVal",document.all[contentid].style.zoom);
}