var dtCh= "/";
var minYear=1900;
var maxYear=2100;
function show_progress_panel(disp_msg)
{
	Ext.MessageBox.show
	(
		{
			msg:disp_msg+'<br /><img src="../images/loading.gif" border="0">',
			width:300
		}
	);
	return false;
}
function show_add_progress_panel()
{
	Ext.MessageBox.show
	(
		{
			msg: 'Opening form..<br /><img src="../images/loading.gif" border="0">',
			width:300
		}
	);
	return false;
}
function show_fetch_progress_panel()
{
	Ext.MessageBox.show
	(
		{
			msg: 'Fetching values..<br /><img src="../images/loading.gif" border="0">',
			width:300
		}
	);
	return false;
}
function show_delete_progress_panel()
{
	Ext.MessageBox.show
	(
		{
			msg: 'Deleting selected record..<br /><img src="../images/loading.gif" border="0">',
			width:300
		}
	);
	return false;
}
function show_status_progress_panel()
{
	Ext.MessageBox.show
	(
		{
			msg: 'Updating status..<br /><img src="../images/loading.gif" border="0">',
			width:300
		}
	);
	return false;
}
function show_loadlist_progress_panel()
{
	Ext.MessageBox.show
	(
		{
			msg: 'Loading list..<br /><img src="../images/loading.gif" border="0">',
			width:300
		}
	);
	return false;
}
function show_submit_progress_panel()
{
	Ext.MessageBox.show
	(
		{
			msg: 'Please wait..<br /><img src="../images/loading.gif" border="0">',
			width:300
		}
	);
	return false;
}
function hide_progress_panel()
{
	Ext.MessageBox.hide();
	return false;
}
function error_message(error_data)
{
	Ext.MessageBox.show
	(
		{
			title: 'Error',
			msg: error_data,
			buttons: Ext.MessageBox.OK,
			icon: Ext.MessageBox.ERROR
		}
	);
	return false;
}
function echeck(str)
{
	var at="@"
	var dot="."
	var lat=str.indexOf(at)
	var lstr=str.length
	var ldot=str.indexOf(dot)
	if (str.indexOf(at)==-1)
	{
		return false
	}
	if (str.indexOf(at)==-1 || str.indexOf(at)==0 || str.indexOf(at)==lstr)
	{
		alert("Invalid E-mail ID")
	}
	if (str.indexOf(dot)==-1 || str.indexOf(dot)==0 || str.indexOf(dot)==lstr)
	{
		return false
	}
	if (str.indexOf(at,(lat+1))!=-1)
	{
		return false
	}
	if (str.substring(lat-1,lat)==dot || str.substring(lat+1,lat+2)==dot)
	{
		return false
	}
	if (str.indexOf(dot,(lat+2))==-1)
	{
		return false
	}
	if (str.indexOf(" ")!=-1)
	{
		return false
	}
	return true					
}
function stripCharsInBag(s, bag)
{
	var i;
	var returnString = "";
	 // Search through string's characters one by one.
	 // If character is not in bag, append to returnString.
	for (i = 0; i < s.length; i++)
	{   
		var c = s.charAt(i);
		if (bag.indexOf(c) == -1) returnString += c;
	}
	return returnString;
}
function daysInFebruary (year)
{
	// February has 29 days in any year evenly divisible by four,
	// EXCEPT for centurial years which are not also divisible by 400.
	return (((year % 4 == 0) && ( (!(year % 100 == 0)) || (year % 400 == 0))) ? 29 : 28 );
}
function DaysArray(n)
{
	for (var i = 1; i <= n; i++) 
	{
		this[i] = 31
		if (i==4 || i==6 || i==9 || i==11) {this[i] = 30}
		if (i==2) {this[i] = 29}
	} 
	return this
}
function isInteger(s)
{
	var i;
	 for (i = 0; i < s.length; i++)
	{   
		// Check that current character is number.
		var c = s.charAt(i);
		if (((c < "0") || (c > "9"))) return false;
	}
	return true;
}
function isDate(dtStr)
{
	var daysInMonth = DaysArray(12)
	var pos1=dtStr.indexOf(dtCh)
	var pos2=dtStr.indexOf(dtCh,pos1+1)
	//var strMonth=dtStr.substring(0,pos1)
	//var strDay=dtStr.substring(pos1+1,pos2)
	var strDay=dtStr.substring(0,pos1)
	var strMonth=dtStr.substring(pos1+1,pos2)
	var strYear=dtStr.substring(pos2+1)
	strYr=strYear
	if (strDay.charAt(0)=="0" && strDay.length>1) strDay=strDay.substring(1)
	if (strMonth.charAt(0)=="0" && strMonth.length>1) strMonth=strMonth.substring(1)
	for (var i = 1; i <= 3; i++)
	{
		if (strYr.charAt(0)=="0" && strYr.length>1) strYr=strYr.substring(1)
	}
	day=parseInt(strDay)
	month=parseInt(strMonth)
	year=parseInt(strYr)
	if (pos1==-1 || pos2==-1)
	{
		//alert("The date format should be : mm/dd/yyyy")
		return false
	}
	if (strMonth.length<1 || month<1 || month>12)
	{
		//alert("Please enter a valid month")
		return false
	}
	if (strDay.length<1 || day<1 || day>31 || (month==2 && day>daysInFebruary(year)) || day > daysInMonth[month])
	{
		//alert("Please enter a valid day")
		return false
	}
	if (strYear.length != 4 || year==0 || year<minYear || year>maxYear)
	{
		//alert("Please enter a valid 4 digit year between "+minYear+" and "+maxYear)
		return false
	}
	if (dtStr.indexOf(dtCh,pos2+1)!=-1 || isInteger(stripCharsInBag(dtStr, dtCh))==false)
	{
		//alert("Please enter a valid date")
		return false
	}
	return true;
}