var dtCh= "/";
var minYear=1900;
var maxYear=2100;
				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;
				    }
				    // All characters are numbers.
				    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 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 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)
					}
					month=parseInt(strMonth)
					day=parseInt(strDay)
					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
				}

				function validateDate(field){
					var dt=field
					if (field.value!=""){
						if (isDate(field.value)==false){
							field.value = "";
							field.focus()
							return false
						}
					}
				    return true
				}

				function validate_phone( strValue )
				{
					var objRegExp  = /(^\d{3}-\d{3}-\d{4}$)/;
					return objRegExp.test(strValue);

				}