var zi = 1;
var curr_el = null;

	function expand(el) {
//		if (el != 'l_z') { slideup('l_z'); }
		if (el != 's_l') { slideup('s_l'); }
		if (el != 'kf') { slideup('kf'); }
		if (el != 'm_s') { slideup('m_s'); }
		toggleSlide(el);
	}


	function picchange(el) {
		if (curr_el != el) {
			curr_el = el;
			zi++;
			changeOpac(0,el);
			document.getElementById(el).style.zIndex = zi;
			opacity(el, 0, 100, 500);
		}
	}
	
	
	function opacity(id, opacStart, opacEnd, millisec) {
	    //speed for each frame
	    var speed = Math.round(millisec / 100);
	    var timer = 0;
	
	    //determine the direction for the blending, if start and end are the same nothing happens
	    if(opacStart > opacEnd) {
	        for(i = opacStart; i >= opacEnd; i--) {
	            setTimeout("changeOpac(" + i + ",'" + id + "')",(timer * speed));
	            timer++;
	        }
	    } else if(opacStart < opacEnd) {
	        for(i = opacStart; i <= opacEnd; i++)
	            {
	            setTimeout("changeOpac(" + i + ",'" + id + "')",(timer * speed));
	            timer++;
	        }
	    }
	}
	
	//change the opacity for different browsers
	function changeOpac(opacity, id) {
	    var object = document.getElementById(id).style;
	    object.opacity = (opacity / 100);
	    object.MozOpacity = (opacity / 100);
	    object.KhtmlOpacity = (opacity / 100);
	    object.filter = "alpha(opacity=" + opacity + ")";
	}
	
	
	function enlarger(fil) {
		var ur = "enlarge.php?loc=photo/" + fil;
		window.open(ur,null,"width=150,height=150");
	}
	
	function enlarger2(fil) {
		var ur = "enlarge.php?loc=" + fil;
		window.open(ur,null,"width=150,height=150");
	}