function imageRollOver(element_id, image_1, image_2){
	$("#"+element_id).mouseover(function(){
		$("#"+element_id).attr({
			src: image_2
		});
	});
	$("#"+element_id).mouseout(function(){
		$("#"+element_id).attr({
			src: image_1
		});
	});
}

function checkUserInsertForm()
{
   var cname, csurname, cpass, cprivileges, cphone, cmail, cwebsite, cimage;
   with(window.document.form1)
   {
      cname    = name;
      cmail   = mail;
      csurname = surname;
	  cpass = password;
	  cprivileges = privileges;
	  cphone = phone;
	  cwebsite = website;
	  cimage = image;
   }

   if(trim(cname.value) == '')
   {
      alert('Molim Vas upisite ime');
      cname.focus();
      return false;
   }
   else if(trim(cmail.value) == '')
   {
      alert('Molim Vas upisite E-mail');
      cmail.focus();
      return false;
   }
   else if(!isEmail(trim(cmail.value)))
   {
      alert('E-mail adresa nije validna');
      cmail.focus();
      return false;
   }
   else if(trim(csurname.value) == '')
   {
      alert('Molim upisite prezime');
      csurname.focus();
      return false;
   }
   else if(trim(cpass.value) == '')
   {
      alert('Molim upisite sifru');
      cpass.focus();
      return false;
   }
   else if(trim(cphone.value) == '')
   {
      alert('Molim upisite telefon');
      cphone.focus();
      return false;
   }
   else if(trim(cimage.value) == '')
   {
      alert('Molim upisite naziv slike');
      cimage.focus();
      return false;
   }
   else if(trim(cwebsite.value) == '')
   {
      alert('Molim upisite web sajt');
      cwebsitefocus();
      return false;
   }
   else
   {
      cname.value    = trim(cname.value);
      cemail.value   = trim(cemail.value);
      csubject.value = trim(csubject.value);
      cmessage.value = trim(cmessage.value);
      return true;
   }
}

function trim(str)
{
   return str.replace(/^\s+|\s+$/g,'');
}

function isEmail(str)
{
   var regex = /^[-_.a-z0-9]+@(([-_a-z0-9]+\.)+(ad|ae|aero|af|ag|ai|al|am|an|ao|aq|ar|arpa|as|at|au|aw|az|ba|bb|bd|be|bf|bg|bh|bi|biz|bj|bm|bn|bo|br|bs|bt|bv|bw|by|bz|ca|cc|cd|cf|cg|ch|ci|ck|cl|cm|cn|co|com|coop|cr|cs|cu|cv|cx|cy|cz|de|dj|dk|dm|do|dz|ec|edu|ee|eg|eh|er|es|et|eu|fi|fj|fk|fm|fo|fr|ga|gb|gd|ge|gf|gh|gi|gl|gm|gn|gov|gp|gq|gr|gs|gt|gu|gw|gy|hk|hm|hn|hr|ht|hu|id|ie|il|in|info|int|io|iq|ir|is|it|jm|jo|jp|ke|kg|kh|ki|km|kn|kp|kr|kw|ky|kz|la|lb|lc|li|lk|lr|ls|lt|lu|lv|ly|ma|mc|md|mg|mh|mil|mk|ml|mm|mn|mo|mp|mq|mr|ms|mt|mu|museum|mv|mw|mx|my|mz|na|name|nc|ne|net|nf|ng|ni|nl|no|np|nr|nt|nu|nz|om|org|pa|pe|pf|pg|ph|pk|pl|pm|pn|pr|pro|ps|pt|pw|py|qa|re|ro|ru|rw|sa|sb|sc|sd|se|sg|sh|si|sj|sk|sl|sm|sn|so|sr|st|su|sv|sy|sz|tc|td|tf|tg|th|tj|tk|tm|tn|to|tp|tr|tt|tv|tw|tz|ua|ug|uk|um|us|uy|uz|va|vc|ve|vg|vi|vn|vu|wf|ws|ye|yt|yu|za|zm|zw)|(([0-9][0-9]?|[0-1][0-9][0-9]|[2][0-4][0-9]|[2][5][0-5])\.){3}([0-9][0-9]?|[0-1][0-9][0-9]|[2][0-4][0-9]|[2][5][0-5]))$/i;

return regex.test(str);
}

// Funkcija za higlight fajlova
function highlight() {
	this.className += " highlight";
}
function unHighlight() {
	this.className -= "highlight";	
}

// Funkcija za proveru pritisnutog dugmeta
function provera(key){
	var keynum;
	var keychar;
	var numcheck;

	if(window.event) // IE
	{
		keynum = key.keyCode;
	}
	else if(key.which) // Netscape/Firefox/Opera
	{
		keynum = key.which;
	}
	if(keynum == 13){
	return true;
	}
	return false;
}

function trazi(target){
	window.location.assign("pretraga.php?trazi="+target);
}

function ShowPoslovi(){
	document.getElementById("pos").style.display = 'block';
	document.getElementById("dog").style.display = 'none';
	document.getElementById("pos_t").style.backgroundColor = '#ff9900';
	document.getElementById("dog_t").style.backgroundColor = '#999999';
}

function ShowDogadjaji(){
	document.getElementById("dog").style.display = 'block';
	document.getElementById("pos").style.display = 'none';
	document.getElementById("dog_t").style.backgroundColor = '#ff9900';
	document.getElementById("pos_t").style.backgroundColor = '#999999';
}