/**********************************************************************/ 
/*Function name :isDigit(theDigit) */ 
/*Usage of this function :test for an digit */ 
/*Input parameter required:thedata=string for test whether is digit */ 
/*Return value :if is digit,return true */ 
/* else return false */ 
/**********************************************************************/ 
function isDigit(theDigit) 
{ 
var digitArray = new Array('0','1','2','3','4','5','6','7','8','9'),j; 

for (j = 0; j < digitArray.length; j++) 
	{if (theDigit == digitArray[j]) 
		return true 
	} 
return false 

} 
/*************************************************************************/ 
/*Function name :isPositiveInteger(theString) */ 
/*Usage of this function :test for an +ve integer */ 
/*Input parameter required:thedata=string for test whether is +ve integer*/ 
/*Return value :if is +ve integer,return true */ 
/* else return false */ 
/*function require :isDigit */ 
/*************************************************************************/ 
function isPositiveInteger(theString) 
{ 
	var theData = new String(theString) 
	
	if (!isDigit(theData.charAt(0))) 
	if (!(theData.charAt(0)== '+')) 
	return false 
	
	for (var i = 1; i < theData.length; i++) 
	if (!isDigit(theData.charAt(i))) 
	return false 
	return true 
} 
/**********************************************************************/ 
/*Function name :isDate(s,f) */ 
/*Usage of this function :To check s is a valid format */ 
/*Input parameter required:s=input string */ 
/* f=input string format */ 
/* =1,in mm/dd/yyyy format */ 
/* else in dd/mm/yyyy */ 
/*Return value :if is a valid date return 1 */ 
/* else return 0 */ 
/*Function required :isPositiveInteger() */ 
/**********************************************************************/ 
function isDate(s,f) 
	{
	var a1=s.split("."); 
	var a2=s.split("-"); 
	var e=true; 
	if ((a1.length!=3) && (a2.length!=3)) 
		{ 
		e=false; 
		} 
	else 
		{if (a1.length==3) 
		var na=a1; 
		if (a2.length==3) 
		var na=a2; 
		if (isPositiveInteger(na[0]) && isPositiveInteger(na[1]) && isPositiveInteger(na[2])) 
			{ if (f==1) 
				{var d=na[1],m=na[0]; 
				} 
			else 
				{var d=na[0],m=na[1]; 
				} 
			var y=na[2]; 
			if (((e) && (y<1000)||y.length>4)) 
				e=false 
			if (e) 
				{ 
				v=new Date(m+"/"+d+"/"+y); 
				if (v.getMonth()!=m-1) 
				e=false; 
				} 
			} 
		else 
			{ 
			e=false; 
			} 
		} 
	return e 
	} 

function checkDate(s,cElementId,okMsg,fehlerMsg) 
{ 
	if (isDate(s,0)) //dd/mm/yyyy format 
		eval("document.getElementById('"+cElementId+"').childNodes[0].data=okMsg");
	else 
		eval("document.getElementById('"+cElementId+"').childNodes[0].data=fehlerMsg");		
	return false; 
}