function setupButtons() {

	preload_left = new Image;
	preload_left.src = "images/b_left2.png";

	preload_right = new Image;
	preload_right.src = "images/b_right2.png";

	var els = new Array("index", "o_mnie", "mity", "gabinety", "wspolpraca", "artykuly", "kontakt");	
	for (var i=0; i<els.length; i++) {
		
		var el = document.getElementById(els[i]).firstChild;
		el.onmouseover = function () { 
			this.style.backgroundImage = "url(images/b_left2.png)"; 
			this.firstChild.style.backgroundImage = "url(images/b_right2.png)";
			if (this.firstChild.className=="wybrany")
				this.firstChild.style.color = "darkgreen";
			else 
				this.firstChild.style.color = "#991010";
			this.style.marginTop = "3px";
			this.style.paddingBottom = "0px";
		}								
		
		el.onmouseout = function () {
			this.style.backgroundImage = "url(images/b_left.png)"; 
			this.firstChild.style.backgroundImage = "url(images/b_right.png)";
			if (this.firstChild.className=="wybrany")
				this.firstChild.style.color = "#b7e2ff";
			else
				this.firstChild.style.color = "yellow";
			this.style.marginTop = "0px";
			this.style.paddingBottom = "3px";			
				
		}
	}
}

/*function over(nazwa) {
		var el = document.getElementById(nazwa);
		el.onmouseover = function () { 
			this.style.backgroundImage = "url(images/b_left2.png)"; 
			this.firstChild.style.backgroundImage = "url(images/b_right2.png)";
			this.style.marginTop = "3px";
			this.style.paddingBottom = "0px";
		}								
}*/