/**
* Toggles the check state of a group of boxes
*
* Checkboxes must have an id attribute in the form cb0, cb1...
* @param The number of box to 'check'
* @param An alternative field name
*
*/

function checkAlle( n, formid, fldName) {
  if (!fldName) {
     fldName = 'cb';
  }
    var formname = 'down'+ formid;
    var f = document.forms[formname];
	var c = f.toggle.checked;
	var n2 = 0;
	for (i=0; i < n; i++) {
		cb = eval( 'f.' + fldName + '' + i );
		if (cb) {
			cb.checked = c;
			n2++;
		}
	}
	if (c) {
		document.forms[formname].boxchecked.value = n2;
	} else {
		document.forms[formname].boxchecked.value = 0;
	}
}

function istChecked(isitchecked,formid){
    var formname = 'down'+ formid;
    if (isitchecked == true){
		document.forms[formname].boxchecked.value++;
	}
	else {
		document.forms[formname].boxchecked.value--;
	}
}

function pruefen(formid,text1,text2){
   var formname = 'down'+ formid;
   var f = document.forms[formname];
   var fehler = "";
   if (f.boxchecked.value < 1) {
      fehler += text1;
   }
   
    // *** error message
   if (fehler != "") {
      var fehlertext = text2;
      fehlertext += fehler;
      alert(fehlertext);
      return false;
   }
   return true;
}

function gocat(catid,itemid){
     var id = document.getElementById("cat_list").value;
     if (id > 0) {
        var link = "index.php?option=com_jdownloads&Itemid=" + itemid + "&task=viewcategory&catid=" + id;
     } else {
        var link = "index.php?option=com_jdownloads&Itemid=" + itemid;
     }
     top.location.href=link;
}

function checkUploadFieldExtern(extern_file){
    if (extern_file.value != ''){
		document.uploadForm.file_upload.value = '';
		document.uploadForm.file_upload.disabled = 'disabled';
	}
	else {
		document.uploadForm.file_upload.removeAttribute("disabled", 0);
	}
}
function checkUploadFieldFile(file_upload){
    if (file_upload.value != ''){
		document.uploadForm.extern_file.value = '';
		document.uploadForm.extern_file.disabled = 'disabled';
	}
	else {
		document.uploadForm.extern_file.removeAttribute("disabled", 0);
	}
}

function sprintf()
{
   if (!arguments || arguments.length < 1 || !RegExp)
   {
      return;
   }
   var str = arguments[0];
   var re = /([^%]*)%('.|0|\x20)?(-)?(\d+)?(\.\d+)?(%|b|c|d|u|f|o|s|x|X)(.*)/;
   var a = b = [], numSubstitutions = 0, numMatches = 0;
   while (a = re.exec(str))
   {
      var leftpart = a[1], pPad = a[2], pJustify = a[3], pMinLength = a[4];
      var pPrecision = a[5], pType = a[6], rightPart = a[7];

      numMatches++;
      if (pType == '%')
      {
         subst = '%';
      }
      else
      {
         numSubstitutions++;
         if (numSubstitutions >= arguments.length)
         {
            alert('Error! Not enough function arguments (' + (arguments.length - 1)
               + ', excluding the string)\n'
               + 'for the number of substitution parameters in string ('
               + numSubstitutions + ' so far).');
         }
         var param = arguments[numSubstitutions];
         var pad = '';
                if (pPad && pPad.substr(0,1) == "'") pad = leftpart.substr(1,1);
           else if (pPad) pad = pPad;
         var justifyRight = true;
                if (pJustify && pJustify === "-") justifyRight = false;
         var minLength = -1;
                if (pMinLength) minLength = parseInt(pMinLength);
         var precision = -1;
                if (pPrecision && pType == 'f')
                   precision = parseInt(pPrecision.substring(1));
         var subst = param;
         switch (pType)
         {
         case 'b':
            subst = parseInt(param).toString(2);
            break;
         case 'c':
            subst = String.fromCharCode(parseInt(param));
            break;
         case 'd':
            subst = parseInt(param) ? parseInt(param) : 0;
            break;
         case 'u':
            subst = Math.abs(param);
            break;
         case 'f':
            subst = (precision > -1)
             ? Math.round(parseFloat(param) * Math.pow(10, precision))
              / Math.pow(10, precision)
             : parseFloat(param);
            break;
         case 'o':
            subst = parseInt(param).toString(8);
            break;
         case 's':
            subst = param;
            break;
         case 'x':
            subst = ('' + parseInt(param).toString(16)).toLowerCase();
            break;
         case 'X':
            subst = ('' + parseInt(param).toString(16)).toUpperCase();
            break;
         }
         var padLeft = minLength - subst.toString().length;
         if (padLeft > 0)
         {
            var arrTmp = new Array(padLeft+1);
            var padding = arrTmp.join(pad?pad:" ");
         }
         else
         {
            var padding = "";
         }
      }
      str = leftpart + padding + subst + rightPart;
   }
   return str;
}