function getWindowheight() {
var windowheight = 0;
if (typeof(window.innerheight) == 'number') {
windowheight = window.innerheight;
}
else {
if (document.documentElement && document.documentElement.clientheight) {
windowheight = document.documentElement.clientheight;
}
else {
if (document.body && document.body.clientheight) {
windowheight = document.body.clientheight;
}
}
}
return windowheight;
}
function setWrap() {
if (document.getElementById) {
var windowheight = getWindowheight();
if (windowheight > 0) {
var wrapElement = document.getElementById('main');
wrapElement.style.position = 'absolute';
wrapElement.style.height = (windowheight) + 'px';
}
}
}
window.onload = function() {
setWrap();
}
window.onresize = function() {
setWrap();
}