var currentFontSize = 4;

function revertStyles(fontsize){
	currentFontSize = fontsize;
	changeFontSize(0);
}

function changeFontSize(sizeDifference){
	//get css font size
	var rule = getRuleByName("body.fs" + (currentFontSize + sizeDifference));
	if (rule){
		document.body.style.fontSize = rule.style.fontSize;
		currentFontSize = currentFontSize + sizeDifference;
		createCookie("FontSize", currentFontSize, 365);
		equalHeight();
	}
	return;
	
};

function getRuleByName(ruleName){
	for (i=0; i<document.styleSheets.length; i++){
		var style = document.styleSheets[i];
		var rules = style.cssRules?style.cssRules:style.rules;
		if (rules){
			for (j = 0; j<rules.length; j++){
				if (rules[j].selectorText.trim().toUpperCase() == ruleName.trim().toUpperCase()){
					return rules[j];
				}
			}
		}
	}
	return null;
}

function setActiveStyleSheet(title) {

	createCookie("ColorCSS", title, 365);
	window.location.reload();
	return;

  var i, a, main, arr;
  arr = document.getElementsByTagName("link");
  for(i=0; (a = arr[i]); i++) {
  	var ltitle = a.getAttribute("title");
    if(a.getAttribute("rel").indexOf("style") != -1 && ltitle) {
      a.disabled = true;
      if(ltitle == title) a.disabled = false;
    }
  }
  createCookie("ColorCSS", title, 365);
}

function createCookie(name,value,days) {
  if (days) {
    var date = new Date();
    date.setTime(date.getTime()+(days*24*60*60*1000));
    var expires = "; expires="+date.toGMTString();
  }
  else expires = "";
  document.cookie = name+"="+value+expires+"; path=/";
}

function setScreenType(screentype){
	bclass = document.body.className.trim();
	if (bclass.indexOf(' ') > 0){
		bclass = bclass.replace(/^\w+/,screentype);
	}else{
		bclass = screentype + ' ' + bclass;
	}

	document.body.className = bclass;
	equalHeight();
	createCookie("ScreenType", screentype, 365);
}

String.prototype.trim = function() { return this.replace(/^\s+|\s+$/g, ""); };

function changeToolHilite(oldtool, newtool) {
	if (oldtool != newtool) {
		if (oldtool) {
			oldtool.src = oldtool.src.replace(/-hilite/,'');
		}
		newtool.src = newtool.src.replace(/.gif$/,'-hilite.gif');
	}
}

//addEvent - attach a function to an event
function addEvent(obj, evType, fn){ 
 if (obj.addEventListener){ 
   obj.addEventListener(evType, fn, false); 
   return true; 
 } else if (obj.attachEvent){ 
   var r = obj.attachEvent("on"+evType, fn); 
   return r; 
 } else { 
   return false; 
 } 
}

function equalHeight (){
	var obj1 = getElem ('ja-box1');
	var obj2 = getElem ('ja-box2');
	var obj3 = getElem ('ja-box3');
	var maxh = 0;
	if (obj1) maxh = obj1.offsetHeight;
	if (obj2 && obj2.offsetHeight > maxh) maxh = obj2.offsetHeight;
	if (obj3 && obj3.offsetHeight > maxh) maxh = obj3.offsetHeight;
	if (obj1) obj1.parentNode.style.height = maxh + "px";
	if (obj2) obj2.parentNode.style.height = maxh + "px";
	if (obj3) obj3.parentNode.style.height = maxh + "px";
}

function getElem (id) {
	var obj = document.getElementById (id);
	if (!obj) return null;
	divs = obj.getElementsByTagName ('div');
	if (divs && divs.length > 1) return divs[divs.length - 1];
	return null;
}
addEvent (window, 'load', equalHeight);

function conf(igrac) {
	poruka = "Da li ste sigurni da želite izbrisati igraca "+igrac+"?";
	if(!confirm(poruka)) return false;
	return true;
}

function conf2(vijest) {
	poruka = "Da li ste sigurni da želite izbrisati vijest "+vijest+"?";
	if(!confirm(poruka)) return false;
	return true;
}

function addText(elname, wrap1, wrap2) {
	if (document.selection) { // for IE 
		var str = document.selection.createRange().text;
		document.forms['inputform'].elements[elname].focus();
		var sel = document.selection.createRange();
		sel.text = wrap1 + str + wrap2;
		return;
	} else if ((typeof document.forms['inputform'].elements[elname].selectionStart) != 'undefined') { // for Mozilla
		var txtarea = document.forms['inputform'].elements[elname];
		var selLength = txtarea.textLength;
		var selStart = txtarea.selectionStart;
		var selEnd = txtarea.selectionEnd;
		var oldScrollTop = txtarea.scrollTop;
		//if (selEnd == 1 || selEnd == 2)
		//selEnd = selLength;
		var s1 = (txtarea.value).substring(0,selStart);
		var s2 = (txtarea.value).substring(selStart, selEnd)
		var s3 = (txtarea.value).substring(selEnd, selLength);
		txtarea.value = s1 + wrap1 + s2 + wrap2 + s3;
		txtarea.selectionStart = s1.length;
		txtarea.selectionEnd = s1.length + s2.length + wrap1.length + wrap2.length;
		txtarea.scrollTop = oldScrollTop;
		txtarea.focus();
		return;
	} else {
		insertText(elname, wrap1 + wrap2);
	}
}

function insertText(elname, what) {
	if (document.forms['inputform'].elements[elname].createTextRange) {
		document.forms['inputform'].elements[elname].focus();
		document.selection.createRange().duplicate().text = what;
	} else if ((typeof document.forms['inputform'].elements[elname].selectionStart) != 'undefined') { // for Mozilla
		var tarea = document.forms['inputform'].elements[elname];
		var selEnd = tarea.selectionEnd;
		var txtLen = tarea.value.length;
		var txtbefore = tarea.value.substring(0,selEnd);
		var txtafter =  tarea.value.substring(selEnd, txtLen);
		var oldScrollTop = tarea.scrollTop;
		tarea.value = txtbefore + what + txtafter;
		tarea.selectionStart = txtbefore.length + what.length;
		tarea.selectionEnd = txtbefore.length + what.length;
		tarea.scrollTop = oldScrollTop;
		tarea.focus();
	} else {
		document.forms['inputform'].elements[elname].value += what;
		document.forms['inputform'].elements[elname].focus();
	}
}

function FooterHighlight(element, value) {
	element.src = "images/" + element.id + (value ? "-hilite" : "") + ".gif";
}

function FooterHighlight2(element, value) {
	element.src = "../images/" + element.id + (value ? "-hilite" : "") + ".gif";
}

function strtoupper( str ) {
    // Make a string uppercase
    // 
    return (str+'').toUpperCase();
}

function setVisible(obj) {
	obj = document.getElementById(obj);
	obj.style.visibility = (obj.style.visibility == 'visible') ? 'hidden' : 'visible';
}