function newWin(url, name, h, w) {
  if (h == '' || w == '') {
	window.open(url, name);
  } else {
    window.open(url, name, 'scrollbars=yes,resizable=yes,height=' + h + ',width=' + w);
  }
}


function previewWin(url, name, h, w) {
	
  if(winName) {
  	winName.close();
	}
  if (h == '' || w == '') {
	winName = window.open(url, name);
  } else {
    winName = window.open(url, name, 'scrollbars=yes,resizable=yes,height=' + h + ',width=' + w);
  }
  return false;
}

function addLoadEvent(func) {
  var oldonload = window.onload;
  if (typeof window.onload != 'function') {
    window.onload = func;
  } else {
    window.onload = function() {
      oldonload();
      func();
    }
  }
}

function insertAfter(newElement,targetElement) {
  var parent = targetElement.parentNode;
  if (parent.lastChild == targetElement) {
    parent.appendChild(newElement);
  } else {
    parent.insertBefore(newElement,targetElement.nextSibling);
  }
}

function addClass(element,value) {
  if (!element.className) {
    element.className = value;
  } else {
    newClassName = element.className;
    newClassName+= " ";
    newClassName+= value;
    element.className = newClassName;
  }
}