function changeTab(tabIdVisible,tabIdHidden)
{
			/* ============== Show Tab ============== */
			document.getElementById(tabIdVisible).style.visibility="visible"; 
			document.getElementById(tabIdVisible).style.display="";
			
			/* ============== Hidden Tab ============== */
			document.getElementById(tabIdHidden).style.visibility="hidden"; 
			document.getElementById(tabIdHidden).style.display="none";
return;
}