function MM_swapImgRestore() { //v3.0
  var i,x,a=document.MM_sr; for(i=0;a&&i<a.length&&(x=a[i])&&x.oSrc;i++) x.src=x.oSrc;
}

function MM_preloadImages() { //v3.0
  var d=document; if(d.images){ if(!d.MM_p) d.MM_p=new Array();
    var i,j=d.MM_p.length,a=MM_preloadImages.arguments; for(i=0; i<a.length; i++)
    if (a[i].indexOf("#")!=0){ d.MM_p[j]=new Image; d.MM_p[j++].src=a[i];}}
}

function MM_findObj(n, d) { //v4.01
  var p,i,x;  if(!d) d=document; if((p=n.indexOf("?"))>0&&parent.frames.length) {
    d=parent.frames[n.substring(p+1)].document; n=n.substring(0,p);}
  if(!(x=d[n])&&d.all) x=d.all[n]; for (i=0;!x&&i<d.forms.length;i++) x=d.forms[i][n];
  for(i=0;!x&&d.layers&&i<d.layers.length;i++) x=MM_findObj(n,d.layers[i].document);
  if(!x && d.getElementById) x=d.getElementById(n); return x;
}

function MM_swapImage() { //v3.0
  var i,j=0,x,a=MM_swapImage.arguments; document.MM_sr=new Array; for(i=0;i<(a.length-2);i+=3)
   if ((x=MM_findObj(a[i]))!=null){document.MM_sr[j++]=x; if(!x.oSrc) x.oSrc=x.src; x.src=a[i+2];}
}

var win = null;
function newWindow(mypage,myname,w,h,features) {
  var winl = (screen.width-w)/2;
  var wint = (screen.height-h)/2;
  if (winl < 0) winl = 0;
  if (wint < 0) wint = 0;
  var settings = 'height=' + h + ',';
  settings += 'width=' + w + ',';
  settings += 'top=' + wint + ',';
  settings += 'left=' + winl + ',';
  settings += features;
  win = window.open(mypage,myname,settings);
  win.window.focus();
}

function checkEmail(email) {
	var filter  = /^([a-zA-Z0-9_\.\-])+\@(([a-zA-Z0-9\-])+\.)+([a-zA-Z0-9]{2,4})+$/;
	if (filter.test(email)) return true;
	else {
		return false;
	}
}

function checkForm(f) {
	var error = '';
	
	with(f) {
		if(first_name.value == '') {
			error += "Niste vnesli ime!\n";
		}
		
		if(last_name.value == '') {
			error += "Niste vnesli priimek!\n";
		}
		
		if(address.value == '') {
			error += "Niste vnesli naslova!\n";
		}
		
		if(telephone.value == '') {
			error += "Niste vnesli telefonsko številko!\n";
		}
		
		if(davcna.value == '') {
			error += "Niste vnesli davčno številko!\n";
		}
		
		if(email.value == '') {
			error += "Niste vnesli email naslov!\n";
		}
		else {
			if(!checkEmail(email.value)) {
				error += "Vnešeni email naslov ni pravilnega formata!\n";
			}
		}
		
		if(!terms.checked) {
			error += "Niste potrdili izjavo!";
		}
	}
	
	if (error != '') {
		alert(error);
		return false;
	}
	
	return true;
}