/**********************************************************************/
/* Açılışta çalıştırılacak fonksiyon */
/**********************************************************************/

function anaKatmaniOrtala() {
	var katman = document.getElementById("ana");
	var katmanEn = parseInt(katman.clientWidth);
	var katmanBoy = parseInt(katman.clientHeight);
	var govdeEn = parseInt(document.body.clientWidth);
	var govdeBoy = parseInt(document.body.clientHeight);
	var sol = parseInt((govdeEn/2)-(katmanEn/2))
	var ust = parseInt((govdeBoy/2)-(katmanBoy/2))

	var altKatman = document.getElementById("alt");
	
	if(sol>=0) {
		katman.style.left = sol+"px";
	} else {
		katman.style.left = "0px";
	}

	if(ust>=0) {
		katman.style.top = ust+"px";
	} else {
		katman.style.top = "0px";
	}
	
	var altKatmanUst = parseInt(katman.style.top)+katman.offsetHeight;
	var altKatmanSol = katman.style.left;

	altKatman.style.top = altKatmanUst;
	altKatman.style.left = altKatmanSol;
}

if(window.addEventListener) {
	window.addEventListener("onresize", anaKatmaniOrtala, false);
	window.addEventListener("load", anaKatmaniOrtala, false);
	window.addEventListener("scroll", anaKatmaniOrtala, false);
} else {
	window.attachEvent("onresize", anaKatmaniOrtala);
	window.attachEvent("onload", anaKatmaniOrtala);
	window.attachEvent("onscroll", anaKatmaniOrtala);
}

/**********************************************************************/
/* Sayfa stillerini değiştiren fonksiyon */
/**********************************************************************/

function stilDegistir(stil) {
	var stilElemani = document.getElementById("stil");
	switch(stil) {
		case "gri": stilElemani.href = "inc/css/stiller/gri.css";
		break;

		case "mavi": stilElemani.href = "inc/css/stiller/mavi.css";
		break;

		case "yesil": stilElemani.href = "inc/css/stiller/yesil.css";
		break;

		case "turuncu": stilElemani.href = "inc/css/stiller/turuncu.css";
		break;

		case "kirmizi": stilElemani.href = "inc/css/stiller/kirmizi.css";
		break;

		default: stilElemani.href = "inc/css/stiller/gri.css";
		break;
	}
}

/**********************************************************************/