var arrMessages = new Array();
var arrSubjects = new Array();
var arrIndices = new Array();

function pageMessage(control, increment)
{
	var newIndex = arrIndices[control] + increment;
	var maxIndex = arrMessages[control].length;

	if (newIndex < 0)
		newIndex = maxIndex - 1;
	else if (newIndex >= maxIndex)
		newIndex = 0;
		
	var messageElem = eval("document.frmAdvocacy." + control + "_txtMessage");
	var subjectElem = eval("document.frmAdvocacy." + control + "_txtSubject");
	var counterElem = eval("document.frmAdvocacy." + control + "_txtCounter");
	
	messageElem.value = arrMessages[control][newIndex];
	subjectElem.value = arrSubjects[control][newIndex];
	counterElem.value = (newIndex + 1) + " of " + maxIndex;
	
	arrIndices[control] = newIndex;
}