function showSub() {
	var oShow = arguments[0];
	oShow.style.display='block';
}
function hideSub() {
	var oHide = arguments[0];
	oHide.style.display='none';
}
function changeli() {
	var oC = arguments[0];
	oC.className = 'doneli';
}
function revertli() {
	var oR = arguments[0];
	oR.className = 'originli';
}
function cssTab() {
	for(var i=arguments[0].parentNode.firstChild; i!=null; i=i.nextSibling)
		i.className='';
	var oCSS = arguments[0];
	oCSS.className='up';
}
function showTab() {
	hideAll();
	var oShow = document.getElementById(arguments[0]);
	oShow.style.display='block';
}
function hideAll() {
	var aId = ['air', 'refrigeration', 'humidification', 'monitoring'];
	for(var i=0; i<aId.length; i++)
		document.getElementById(aId[i]).style.display='none';
}
function showTabSolution() {
	hideAllSolution();
	var oShow = document.getElementById(arguments[0]);
	oShow.style.display='block';
}
function hideAllSolution() {
	var aId = ['solution1', 'solution2'];
	for(var i=0; i<aId.length; i++)
		document.getElementById(aId[i]).style.display='none';
}