function swapText(id)
{	
	
	for (var x=1; x < 4; x++) {
		if ( document.getElementById("ctab" +x).style.display == "block" ){
			var prevID = x;
		}else{}
	}
	
	var actID = id;
	var prevID = prevID;
	
	var divIdBlock = "ctab" +actID;
	var divIdNone  = "ctab" +prevID;

	var tabIdAct   = "tab" +actID;
	var tabIdNone  = "tab" +prevID;	
	
	document.getElementById(divIdNone).style.display= "none";
	document.getElementById(divIdBlock).style.display= "block";
       document.getElementById(tabIdAct).className = "act";
	document.getElementById(tabIdNone).className = "testing";



}