var tmr;
var t;
var obj;

function sFa(str) {
    
	obj = gObj(str);
	sLft();
	shw(true);
	t = 0;
	sTmr();
}

function hFa() {
	t = -100;
	sTmr();
	return false;
}

function sTmr() {
	tmr = setInterval("fd()",20);
}

function fd() {
	var amt = Math.abs(t+=10);
	if(amt == 0 || amt == 100) clearInterval(tmr);
	amt = (amt == 100)?99.999:amt;
  	
	obj.style.filter = "alpha(opacity:"+amt+")";
	obj.style.KHTMLOpacity = amt/100;
	obj.style.MozOpacity = amt/100;
	obj.style.opacity = amt/100;
	
	if(amt == 0) shw(false);
}

function sLft() {
	var w = 250;	// set this to 1/2 the width of the faw div defined in the style sheet 
			// there's not a reliable way to retrieve an element's width via javascript!!
					
	var l = (document.body.innerWidth)? document.body.innerWidth / 2:document.body.offsetWidth / 2;

	obj.style.left = (l - w)+"px";
}

function gObj(str) {
    var x =0;
	//alert (''+str+'');
	x = str;
	//alert (''+x+'');
    if( x == 1 ){
	return document.getElementById("faw"); 
	}
	if( x == 2 ){
	return document.getElementById("faw2"); 
	}
	if( x == 3 ){
	return document.getElementById("faw3"); 
	}
	if( x == 4 ){
	return document.getElementById("faw4"); 
	}
	if( x == 5 ){
	return document.getElementById("faw5"); 
	}
		
}

function shw(b) {
	(b)? obj.className = 'show':obj.className = '';	
}