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 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){
		   alert("Invalid E-mail ID")
		   return false
		}

		if (str.indexOf(at)==-1 || str.indexOf(at)==0 || str.indexOf(at)==lstr){
		   alert("Invalid E-mail ID")
		   return false
		}

		if (str.indexOf(dot)==-1 || str.indexOf(dot)==0 || str.indexOf(dot)==lstr){
		    alert("Invalid E-mail ID")
		    return false
		}

		 if (str.indexOf(at,(lat+1))!=-1){
		    alert("Invalid E-mail ID")
		    return false
		 }

		 if (str.substring(lat-1,lat)==dot || str.substring(lat+1,lat+2)==dot){
		    alert("Invalid E-mail ID")
		    return false
		 }

		 if (str.indexOf(dot,(lat+2))==-1){
		    alert("Invalid E-mail ID")
		    return false
		 }
		
		 if (str.indexOf(" ")!=-1){
		    alert("Invalid E-mail ID")
		    return false
		 }

 		 return true					
	}





function formValidate() { 
	var form   = document.frmdaska;
	
	  var form   = document.frmdaska;
	  var iChars = "!@#$%^&*()+=-[]\\\';,./{}|\":<>?";
	  var iChars1 = "!@#$%^&*+=[]\\\';,./{}|\":<>?";
	  var phoneRE = /^\(\d{3}\) \d{3}-\d{4}$/;
	  var nonums = /^[0-9]*$/;
      var objRegExp = /^\d{2}(\-|)\d{4}$/
	  
 	  var guestname = form.guestname;
	  var address  = form.address;
	  var country   = form.country;
	  var telephone = form.telephone;
	  var fax  = form.fax;
	  var email = form.email;

	  var arrivedate = form.arrivedate;
	  var arrivemonth = form.arrivemonth;
	  var arriveyear  = form.arriveyear;
	  var depdate  = form.depdate;
	  var depmonth  = form.depmonth;
	  var depyear   = form.depyear;
	  
	  var holdername = form.holdername;
	  var cardtype = form.cardtype;
	  var cardno =  form.cardno;
	  var expdate  = form.expdate;
	  var authno  = form.authno;
	  var amount = form.account;
	  
	 var ad = arrivedate.selectedIndex;
	 var ad_text = arrivedate.options[ad].text;
	 
	 var am = arrivemonth.selectedIndex;
	 var am_text = arrivemonth.options[am].text;
	 
	 var ay = arriveyear.selectedIndex;
	 var ay_text = arriveyear.options[ay].text;
	 
	 var dd = depdate.selectedIndex;
	 var dd_text = depdate.options[dd].text;
	 
	 var dm = depmonth.selectedIndex;
	 var dm_text = depmonth.options[dm].text;
	 
	 var dy = depyear.selectedIndex;
	 var dy_text = depyear.options[dy].text;
	 


     //var adate = ay_text+','+am_text+','+ad_text;
	 
	 var adate = am_text+' '+ad_text+','+' '+ay_text;
	 var ddate = dm_text+' '+dd_text+','+' '+dy_text;
	 
	 var temp1 = new Date(adate); 
 	 var temp2 = new Date(ddate );
		
	  
	  	if ((guestname.value==null)||(guestname.value=="")){
		 alert("Please Enter your Guest Name")
		 guestname.focus()
		 return false
		}
		
		for (var i = 0; i < guestname.value.length; i++) {
  		  if (iChars.indexOf(guestname.value.charAt(i)) != -1) {
  	  		alert ("Your guestname has special characters. \nThese are not allowed.\n Please remove them and try again.");
	  		guestname.value="";
	  		guestname.focus();
  	  		return false;
  	  	  }
   		}
	

	  	if ((address.value==null)||(address.value=="")){
		 alert("Please Enter your address")
		 address.focus()
		 return false
		}

	  	if ((country.value==null)||(country.value=="")){
		 alert("Please Enter your country")
		 country.focus()
		 return false
		}
		
		for (var i = 0; i < country.value.length; i++) {
  		  if (iChars.indexOf(country.value.charAt(i)) != -1) {
  	  		alert ("Your country has special characters. \nThese are not allowed.\n Please remove them and try again.");
	  		country.value="";
	  		country.focus();
  	  		return false;
  	  	  }
   		}
		

	  	if ((telephone.value==null)||(telephone.value=="")){
		 alert("Please Enter your telephone")
		 telephone.focus()
		 return false
		}

		for (var i = 0; i < telephone.value.length; i++) {
  		  if (iChars.indexOf(telephone.value.charAt(i)) != -1) {
  	  		alert ("Your telephone number has special characters. \nThese are not allowed.\n Please remove them and try again.");
	  		telephone.value="";
	  		telephone.focus();
  	  		return false;
  	  	  }
   		}
		
	   if (isInteger(telephone.value)==false){
		  alert("Please enter valid telephone");
		  telephone.value="";
		  telephone.focus()
		  return false
	   }
	   
	   if ( telephone.value.length != 10 )
	   {
		   alert("Telephone number should be 10 digits");
		   telephone.value = "";
		   telephone.focus();
		   return false;
	   }
				
	  if ( fax.value.length != 0)
	  {
			   for (var i = 0; i < fax.value.length; i++) {
			  if (iChars.indexOf(fax.value.charAt(i)) != -1) {
				alert ("Your fax number has special characters. \nThese are not allowed.\n Please remove them and try again.");
				fax.value="";
				fax.focus();
				return false;
			  }
			}
			
		   if (isInteger(fax.value)==false){
			  alert("Please enter valid fax");
			  fax.value="";
			  fax.focus()
			  return false
		   }
		   
		   if ( fax.value.length != 10 )
		   {
			   alert("fax number should be 10 digits");
			   fax.value = "";
			   fax.focus();
			   return false;
		   }
	  }

	   if ((email.value==null)||(email.value=="")){
	 	 alert("Please Enter your Email ID")
		 email.focus()
		 return false
	   }
		
	   if (echeck(email.value)==false){
			 email.value=""
			 email.focus()
			 return false
	   }	
	   
	   
   		if ( temp1 > temp2 )
		{ 
		 alert ("Depature date is lesser then the Arrival date");
		 return false;
		}

	   
	   if ((holdername.value==null)||(holdername.value=="")){
	 	 alert("Please Enter card holder name")
		 holdername.focus()
		 return false
	   }
	   
	   for (var i = 0; i < holdername.value.length; i++) {
  		  if (iChars.indexOf(holdername.value.charAt(i)) != -1) {
  	  		alert ("Card holdername has special characters. \nThese are not allowed.\n Please remove them and try again.");
	  		holdername.value="";
	  		holdername.focus();
  	  		return false;
  	  	  }
   		}
		
	   
	   

*/

}