//date validation
function isDate(sDate,sfield) {
	var re = /^\d{1,2}\/\d{1,2}\/\d{2,4}$/
	if (re.test(sDate)) {
	  var dArr = sDate.split("/");
	  var d = new Date(sDate);
	  //return d.getMonth() + 1 == dArr[0] && d.getDate() == dArr[1] && d.getFullYear() == dArr[2];
	} else if (sDate!=""){
			alert (sDate + ' is not a valid date! Please enter a valid date format or leave blank.');
			document.getElementById(sfield).value='';
		//return false;
	}
}
//number validation
function isNumeric(sText,sfield) {
   	var ValidChars = "0123456789.";
   	var IsNumber=true;
   	var Char;
	for (i = 0; i < sText.length && IsNumber == true; i++) { 
    	Char = sText.charAt(i); 
      	if (ValidChars.indexOf(Char) == -1) {
			IsNumber = false;
			alert(sText + 'is not a valid number! Please enter a valid number format or leave blank.');
        	document.getElementById(sfield).value='';
		}
   	}
   	//return IsNumber;
}