js_get_browserInnerHeight

/**
* Gets the inner height of the browser page.
*
* Credit: http://www.quirksmode.org/viewport/compatibility.html
*/
function js_get_browserInnerHeight(){

if (self.innerHeight) // all except Explorer
{
x = self.innerWidth;
}
else if (document.documentElement && document.documentElement.clientHeight)
// Explorer 6 Strict Mode
{
x = document.documentElement.clientWidth;
}
else if (document.body) // other Explorers
{
x = document.body.clientWidth;
}

return x;

}