function openpop(page_link, popwidth, popheight, time) {
switchit(1);
var node=document.createElement("div");
node.innerHTML = "";
document.getElementById("pop_up").appendChild(node);
}
function AddText(elem, text) {
var sentence=text;
var node=document.createElement("div");
node.innerHTML = sentence;
document.getElementById(elem).appendChild(node);
}
function switchit(stat) {
if (stat == 1) {
document.getElementById('opacity_bg').style.display = 'block';
document.getElementById('pop_up').style.display = 'block';
dark_or_light('opacity_bg', 0, 65, 500);
dark_or_light('pop_up', 0, 100, 500);
} else {
dark_or_light('opacity_bg', 65, 0, 500);
setTimeout("document.getElementById('opacity_bg').style.display='none';",500);
dark_or_light('pop_up', 100, 0, 500);
setTimeout("element = document.getElementById('pop_up');while (element.firstChild) {element.removeChild(element.firstChild);}", 500);
}
}
function dark_or_light(id, start, end, msec) {
speed = Math.round(msec / 100);
timer = 0;
if(start > end) {
for(i = start; i >= end; i--) {
setTimeout("addopacity(" + i + ",'" + id + "')",timer * speed);
timer++;
}
} else if(start < end) {
for(i = start; i <= end; i++) {
setTimeout("addopacity(" + i + ",'" + id + "')",timer * speed);
timer++;
}
}
}
//change the opacity for different browsers
function addopacity(op, id) {
var object = document.getElementById(id).style;
object.opacity = (op / 100);
object.MozOpacity = (op / 100);
object.KhtmlOpacity = (op / 100);
object.filter = "alpha(opacity=" + op + ")";
}
