function isAccess(e) {
	
	var keynum;
	var ismouseClick = 1;
	
	if (window.event) {		//IE & Safari
		keynum = e.keyCode;
		
		//SafariÀÇ °æ¿ì ¸¶¿ì½ºÅ¬¸¯Àº keynum 0 ÀÌ ³Ñ¾î¿È
		if (event.button == 0 || keynum == 0){
			ismouseClick = 0;
		}		
		
	} else if ( e.which ){		// Netscape/Firefox/Opera
		keynum = e.which;
		
		if (keynum == 1) {
			ismouseClick = 0;
		}		
		
	}
	
	//¸¶¿ì½º Ŭ¸¯À̰ųª ¿£ÅÍÅ°¸¦ ´©¸¥°æ¿ì true°ª ¹Ýȯ
	if ( ismouseClick == 0 || keynum == 13 ) {
		return true;
	} else {
		return false;
	}
}

// gnb 
function tabGnb(key, e) {
	var gnbtitile1 = document.getElementById("gnbMenu01");
	var gnbtitile2 = document.getElementById("gnbMenu02");
	var gnbtitile3 = document.getElementById("gnbMenu03");
	var gnbtitile4 = document.getElementById("gnbMenu04");
	var gnbtitile5 = document.getElementById("gnbMenu05");
	var gnblist1 = document.getElementById("gnbList01");
	var gnblist2 = document.getElementById("gnbList02");
	var gnblist3 = document.getElementById("gnbList03");
	var gnblist4 = document.getElementById("gnbList04");
	var gnblist5 = document.getElementById("gnbList05");

	if ( isAccess(e) ) {
		if (key == 1) 
		 {
			gnbtitile1.src = "/03ch/images/common/gnb01_on.gif";
			gnbtitile2.src = "/03ch/images/common/gnb02.gif";
			gnbtitile3.src = "/03ch/images/common/gnb03.gif";
			gnbtitile4.src = "/03ch/images/common/gnb04.gif";
			gnbtitile5.src = "/03ch/images/common/gnb05.gif";
			gnblist1.style.display = "block";
			gnblist2.style.display = "none";
			gnblist3.style.display = "none";
			gnblist4.style.display = "none";
			gnblist5.style.display = "none";
			return;
		}
		else if(key==2) 
		{
			gnbtitile1.src = "/03ch/images/common/gnb01.gif";
			gnbtitile2.src = "/03ch/images/common/gnb02_on.gif";
			gnbtitile3.src = "/03ch/images/common/gnb03.gif";
			gnbtitile4.src = "/03ch/images/common/gnb04.gif";
			gnbtitile5.src = "/03ch/images/common/gnb05.gif";
			gnblist1.style.display = "none";
			gnblist2.style.display = "block";
			gnblist3.style.display = "none";
			gnblist4.style.display = "none";
			gnblist5.style.display = "none";
			return;
		}
		else if (key == 3) 
		{
			gnbtitile1.src = "/03ch/images/common/gnb01.gif";
			gnbtitile2.src = "/03ch/images/common/gnb02.gif";
			gnbtitile3.src = "/03ch/images/common/gnb03_on.gif";
			gnbtitile4.src = "/03ch/images/common/gnb04.gif";
			gnbtitile5.src = "/03ch/images/common/gnb05.gif";
			gnblist1.style.display = "none";
			gnblist2.style.display = "none";
			gnblist3.style.display = "block";
			gnblist4.style.display = "none";
			gnblist5.style.display = "none";
			return;
		}
		else if(key==4) 
		{
			gnbtitile1.src = "/03ch/images/common/gnb01.gif";
			gnbtitile2.src = "/03ch/images/common/gnb02.gif";
			gnbtitile3.src = "/03ch/images/common/gnb03.gif";
			gnbtitile4.src = "/03ch/images/common/gnb04_on.gif";
			gnbtitile5.src = "/03ch/images/common/gnb05.gif";
			gnblist1.style.display = "none";
			gnblist2.style.display = "none";
			gnblist3.style.display = "none";
			gnblist4.style.display = "block";
			gnblist5.style.display = "none";
			return;
		}
		else if(key==5) 
		{
			gnbtitile1.src = "/03ch/images/common/gnb01.gif";
			gnbtitile2.src = "/03ch/images/common/gnb02.gif";
			gnbtitile3.src = "/03ch/images/common/gnb03.gif";
			gnbtitile4.src = "/03ch/images/common/gnb04.gif";
			gnbtitile5.src = "/03ch/images/common/gnb05_on.gif";
			gnblist1.style.display = "none";
			gnblist2.style.display = "none";
			gnblist3.style.display = "none";
			gnblist4.style.display = "none";
			gnblist5.style.display = "block";
			return;
		}
	}
}