loader = new Object()

loader.show = function() 
{
	//frameWidth = document.documentElement.clientWidth;
	//frameHeight = document.documentElement.clientHeight;
	frameHeight = document.body.clientHeight;
	frameWidth = document.body.clientWidth;
	document.getElementById("ajax_loader").style.top = (frameHeight/2)-50;
    document.getElementById("ajax_loader").style.left = frameWidth/2;
	document.getElementById("ajax_loader").style.visibility = "visible";
}
loader.hide = function()
{
	document.getElementById("ajax_loader").style.visibility = "hidden";
}