// set focus for a specific field
function setFocus(elementId) {
	var obj = document.getElementById(elementId);
	if (obj) {
		obj.focus();
	}
}

/**
 *  Add event handler for an element (cross browser support)
 */
function addEventHandler(target, eventName, fnHandler) {
	if ( target.addEventListener ) {
	  target.addEventListener(eventName, fnHandler, false);
	} else if (target.attachEvent) {
	  target.attachEvent("on" + eventName, fnHandler);
	} else {
	  target["on" + eventName] = fnHandler;
	}  	
}

// execute a function when pressing enter key
function executeEnter(oEvent, functionName) {
    var enter = 13;
    var keynum;
    var keychar;
    if(window.event){//IE
        keynum = oEvent.keyCode;
    } else if(oEvent.which){
        keynum = oEvent.which;
    }
    if(keynum == enter){
        eval(functionName + "()");
        return false;
    }
}

// jump menu
function jumpMenu(targ,selObj){
	var url = '/view-folder.htm?folderId=';
	eval(targ+".location='"+ url + selObj.options[selObj.selectedIndex].value+"'");
}

// show help window
function showHelp(url){
    var width = 600;
    var height = 500;
    var left = (screen.width/2) - width/2;
    var top = (screen.height/2) - height/2;

    window.open(url, 'popUpWin', 'toolbar=no,location=no,directories=no,status=no,menubar=no,scrollbars=yes,resizable=yes,copyhistory=yes,width='+width+',height='+height+',left='+left+', top='+top+',screenX='+left+',screenY='+top+'');
}

// allow only number in the input
function numbersonly(myfield, e, dec) {
  var key;
  var keychar;

  if (window.event)
    key = window.event.keyCode;
  else if (e)
    key = e.which;
  else
    return true;
  keychar = String.fromCharCode(key);

  // control keys
  if ((key==null) || (key==0) || (key==8) || (key==9) || (key==13) || (key==27) )
    return true;

  // numbers
  else if ((("0123456789").indexOf(keychar) > -1))
    return true;

  // decimal point jump
  else if (dec && (keychar == ".")) {
    myfield.form.elements[dec].focus();
    return false;
  } else
    return false;
}

function addCommas(nStr) {
    nStr += '';
    x = nStr.split('.');
    x1 = x[0];
    x2 = x.length > 1 ? '.' + x[1] : '';
    var rgx = /(\d+)(\d{3})/;
    while (rgx.test(x1)) {
        x1 = x1.replace(rgx, '$1' + ',' + '$2');
    }
    return x1 + x2;
}

// add comma to the number when typing
function formatNumber(inputElement) {
    var value = inputElement.value;
    value = value.replace(/,/g, "")
    value = addCommas(value);
    inputElement.value = value;
}