function validateBlank(controlName)
{
      if (document.getElementById(controlName).value=="")
      {
                 //alert("Name Feild can not be blank");
                // document.getElementById("<%=txtName.ClientID%>").focus();
                 return false;
      }
      else
      {
        return true;
      }
}
function ValidateMinLength(controlName,mlength)
{
    if(document.getElementById(controlName).value.length < mlength)
    {
        return false;
    }
}
function validateEmail(controlName)
{
     var emailPat = /^(\".*\"|[A-Za-z]\w*)@(\[\d{1,3}(\.\d{1,3}){3}]|[A-Za-z]\w*(\.[A-Za-z]\w*)+)$/;
     var emailid=document.getElementById(controlName).value;
   /*  var matchArray = emailid.match(emailPat);
     if (matchArray == null)
    {
              // alert("Your email address seems incorrect. Please try again.");
               //document.getElementById("<%=txtEmail.ClientID %>").focus();
               return false;
    }*/
    return echeck(emailid);
}

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){
		   return false
		}

		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 validateURL(controlName)
{
    var Url="^[A-Za-z]+://[A-Za-z0-9-_]+\\.[A-Za-z0-9-_%&\?\/.=]+$"
    var tempURL=document.getElementById(controlName).value;
    var matchURL=tempURL.match(Url);
     if(matchURL==null)
     {
               //alert("Web URL does not look valid");
              // document.getElementById("<%=txtWebURL.ClientID %>").focus();
               return false;
     }
}
function validateNumbers(controlName)
{
     var digits="0123456789";
     var temp;
     for (var i=0;i<document.getElementById(controlName).value.length;i++)
     {
               temp=document.getElementById(controlName).value.substring(i,i+1);
               if (digits.indexOf(temp)==-1)
               {
                        //alert("Please enter correct zip code");
                        //document.getElementById("<%=txtZIP.ClientID%>").focus();
                        return false;
               }
     }
     return true;
}
 function validateDate (dayControlName,MonControlName,YearControlName)
 {
   // alert(document.getElementById(dayControlName).options[document.getElementById(dayControlName).selectedIndex].value);
    var day = document.getElementById(dayControlName).options[document.getElementById(dayControlName).selectedIndex].value;
    var mon = document.getElementById(MonControlName).options[document.getElementById(MonControlName).selectedIndex].value;
    var year = document.getElementById(YearControlName).options[document.getElementById(YearControlName).selectedIndex].value;
    var mdate = mon+"/"+day+"/"+year;
    return isDate(mdate);
 }

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
}