function setHeights()
{
//	var minvarheight   = 350;
	var wh             = getWindowHeight();
//	var fixedheight    = 25 + 182;
//	var variableheight = wh - fixedheight;
//	if (variableheight <= minvarheight) {
//		return;
//	}
//	alert(wh);
	if(isOpera) {
		return;
	}
	document.getElementById('tbl_main').setAttribute('height', wh);
	document.getElementById('tbl_main2').setAttribute('height', wh);
	document.getElementById('td_top_menu').setAttribute('height', 1);
	return;
}