var xmlhttp = new XMLHttpRequest();


function showSelectedImage(imageId) {
document.getElementById('showImage').src = '../image/?' + imageId;
}

function chooseImageMode(uploadName) {
if (uploadName == "") {
document.getElementById('selectImage').disabled = false;
showSelectedImage(document.getElementById('selectImage').value);
} else {
document.getElementById('selectImage').disabled = true;
document.getElementById('showImage').src = '../image/';
}
}

function viewCategoryNewsitems(categoryId) {
if (categoryId == 0) {
document.location.href="./";
} else {
document.location.href="./?category=" + categoryId;
}
}

function toggleCategories() {

var categories = document.getElementById('categories');
var categoryList = document.getElementById('categoryList');
var show = (categories.className == 'show');

categories.className = show ? 'hide' : 'show';
categoryList.className = show ? 'hide' : 'show';

}