function avtorji ()
{
  var w = screen.width;
  var h = screen.height;
  var ow = 400;
  var oh = 235;
  var ol = parseInt((w-ow-10)/2);
  var ot =  parseInt((h-oh-40)/2);
  if (ot < 0){ ot = 0; }

  var HTMLPopUp = window.open ('avtorji.php', 'Avtorji', 'width='+ow+',height='+oh+',left='+ol+',top='+ot)
}

function layerSetup() {
	centerLyr = new layerObject('centerLayer', available_width/2-390,235);
}

function Is() {
  var agent   = navigator.userAgent.toLowerCase();
  this.major  = parseInt(navigator.appVersion);
  this.minor  = parseFloat(navigator.appVersion);
  this.ns     = ((agent.indexOf('mozilla')   != -1) &&
                (agent.indexOf('spoofer')    == -1) &&
                (agent.indexOf('compatible') == -1) &&
                (agent.indexOf('opera')      == -1) &&
                (agent.indexOf('webtv')      == -1));
  this.ns4    = (this.ns && (this.major      ==  4));
  this.ns6    = (this.ns && (this.major      >=  5));
  this.ie     = (agent.indexOf("msie")       != -1);
  this.ie3    = (this.ie && (this.major      <   4));
  this.ie4  	= (this.ie && (this.major >= 4));
  this.ie5    = (this.ie && (this.major      ==  4) &&
                (agent.indexOf("msie 5.0")   != -1));
  this.ieX    = (this.ie && !this.ie3 && !this.ie4);
}


var is = new Is();
	
function layerObject(id,left,top) {
	if (is.ie5||is.ns6){
		if (document.getElementById(id)) {
			this.obj = document.getElementById(id).style;
			this.obj.left = left;
			this.obj.top = top;
			return this.obj;
		}
	} 
	else if(is.ie4) {
		if (document.all[id]) {
			this.obj = document.all[id].style;
			this.obj.left = left;
			this.obj.top = top;
			return this.obj;
		}			
	} 
	else if(is.ns4) {
		if (document.layers[id]) {
			this.obj = document.layers[id];
			this.obj.left = left;
			this.obj.top = top;
			return this.obj;
		}
	}  
}

function linkilinki(kazalec) {
	document.location.href = 'http://www.btc.si'+kazalec;
}

function Popup(url,ime,params) {
	var okno;
	okno = window.open(url,ime,params);
}

function isEmail(str) 
{
  var supported = 0;
  if (window.RegExp) {
    var tempStr = "a";
    var tempReg = new RegExp(tempStr);
    if (tempReg.test(tempStr)) supported = 1;
  }
  if (!supported) 
    return (str.indexOf(".") > 2) && (str.indexOf("@") > 0);
    
  var r1 = new RegExp("(@.*@)|(\\.\\.)|(@\\.)|(^\\.)|(\\s)");
  var r2 = new RegExp("^.+\\@(\\[?)[a-zA-Z0-9\\-\\.]+\\.([a-zA-Z]{2,3}|[0-9]{1,3})(\\]?)$");
  return (!r1.test(str) && r2.test(str));
}