function init()
{
	var main = document.getElementById('main');
	//var table1 = document.getElementById('table1').offsetHeight;
	var footer = document.getElementById('footer').offsetHeight;
	var wH = document.documentElement.clientHeight;

	if(main.offsetHeight < wH)
	{
		main.style.height = (wH - footer) + 'px';
	}

}