function  swapImgRestore() {
  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 preloadImages() {
  var d=document; if(d.images){ if(!d.MM_p) d.MM_p=new Array();
    var i,j=d.MM_p.length,a=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 findObj(n, d) {
  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 swapImage() {
  var i,j=0,x,a=swapImage.arguments; document.MM_sr=new Array; for(i=0;i<(a.length-2);i+=3)
   if ((x=findObj(a[i]))!=null){document.MM_sr[j++]=x; if(!x.oSrc) x.oSrc=x.src; x.src=a[i+2];}
}

function openPage(url, title) {
      window.open(url, title, "height=450,width=570,location=no,scrollbars=yes,menubars=no,toolbars=no,resizable=yes");
    }

function openPage2(url, title) {
      window.open(url, title, "height=650,width=770,location=no,scrollbars=yes,menubars=no,toolbars=no,resizable=yes");
    }

function validate_submit(form) {

  var error = "";
  var prezime = trim(form.prezime.value);
	var tel_broj = trim(form.tel_broj.value);

  if (prezime == "") {
    error += "Molimo upišite ime i prezime.\n";
  }
  if (tel_broj == "") {
    error += "Molimo upišite fixni telefonski broj.";
  }

  if (error != "") {
    alert(error);
    return false;
  }
}

function trim(str, chars) {
     return ltrim(rtrim(str, chars), chars);
 }

 function ltrim(str, chars) {
     chars = chars || "\\s";
     return str.replace(new RegExp("^[" + chars + "]+", "g"), "");
 }

 function rtrim(str, chars) {
     chars = chars || "\\s";
     return str.replace(new RegExp("[" + chars + "]+$", "g"), "");
 }