function ChangeGraph(chartType)
{
	//alert(chartType);
	if(chartType == "changes")
	{
		//alert(document.getElementById("MarketSharePanel"));
		//alert(document.getElementById("ChangesPanel"));
		//document.getElementById("MarketSharePanel").style.visibility = "hidden";
		//document.getElementById("ChangesPanel").style.visibility = "visible";
		
		document.getElementById("MarketSharePanel").style.display = "none";
		document.getElementById("ChangesPanel").style.display = "block";
	}
	else
	{
		//document.getElementById("ChangesPanel").style.visibility = "hidden";
		//document.getElementById("MarketSharePanel").style.visibility = "visible";
		
		document.getElementById("MarketSharePanel").style.display = "block";
		document.getElementById("ChangesPanel").style.display = "none";
	}
}



// Opens a new window for help
function RegistrarMarketShareHelp()
{
	var sFeatures = "height=500px, width=600px, scrollbars=1, help=0;"
	window.open("../help/RegistrarMarketShareHelp.htm","",sFeatures);
}

function DisplayStartCalendar()
{
	var s = Form1.txtStartDate.value;	
	if (s == "0" || s == "") 
	{
		DateInput('txtStartDate', true, 'MM/DD/YYYY');
	}
	else
	{
		DateInput('txtStartDate', true, 'MM/DD/YYYY', s);
	}
	
}
// Displays the calendar
function DisplayEndCalendar()
{
	var s = Form1.txtEndDate.value;	
	if (s == "0" || s == "") 
	{
		DateInput('txtEndDate', true, 'MM/DD/YYYY');
	}
	else
	{
		DateInput('txtEndDate', true, 'MM/DD/YYYY', s);
	}
	
}
// validates for future date
function CheckFutureDate(dateControl)
{
	var currentDate = new Date() ;
	var selectedDate = new Date(dateControl.value) ;
	if (selectedDate > currentDate)
	{
		alert(ERR_FUTURE_DATE);
		dateControl.focus();
		dateControl.select();
		return false;
	}
	return true;	
}
// compares the start and end date
function CompareDates()
{
	var startDate = new Date(Form1.txtStartDate.value) ;
	var endDate = new Date(Form1.txtEndDate.value) ;
	if (startDate > endDate)
	{
		alert(ERR_COMPARE_DATE);
		Form1.txtStartDate.focus();
		Form1.txtStartDate.select();
		return false;
	}
	return true;	
}