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;
	}
}
function jsTabChange(key, e) {		
	if ( isAccess(e) ) {
//		switch(key)
		if (key == 1) { 
			document.getElementById("c01").style.display = "block";
			document.getElementById("c02").style.display = "none";
			document.getElementById("c03").style.display = "none";
			document.getElementById("c04").style.display = "none";
			return;
		}
		else if(key==2)
		{				
			document.getElementById("c01").style.display = "none";
			document.getElementById("c02").style.display = "block";
			document.getElementById("c03").style.display = "none";
			document.getElementById("c04").style.display = "none";
			return;
		}				
		else if(key==3)
		{
			document.getElementById("c01").style.display = "none";
			document.getElementById("c02").style.display = "none";
			document.getElementById("c03").style.display = "block";
			document.getElementById("c04").style.display = "none";
			return;
		}
		else if(key==4)
		{
			document.getElementById("c01").style.display = "none";
			document.getElementById("c02").style.display = "none";
			document.getElementById("c03").style.display = "none";
			document.getElementById("c04").style.display = "block";
			return;
		}		
	}
}