function user_register(form){
if(form.txt_fname.value==""){
alert("Please enter you full name.");
form.txt_fname.focus();
return false;
}
else if (isDate(form.txt_dob.value)==false){
		form.txt_dob.focus()
		return false
	}else if (echeck(form.txt_email.value)==false){
		form.txt_email.focus()
		return false
	}else if(form.txt_usr_id.value==""){
	alert("Please enter your user id");
	form.txt_usr_id.focus();
	return false;
	}else if(form.txt_pass.value==""){
	alert("Please enter your password");
	form.txt_pass.focus();
	return false
	}else if(form.txt_pass.value.length < 6){
	alert("Password must be 6 characters in length.");
	form.txt_pass.focus();
	return false
	}else if(form.txt_re_usr_pass.value==""){
	alert("Please enter your confirm password");
	form.txt_re_usr_pass.focus();
	return false
	}
	else if(form.txt_pass.value!=form.txt_re_usr_pass.value){
	alert("Password mismatch.");
	form.txt_re_usr_pass.focus();
	return false
	}else if(getFileType(form.file_usr_image.value)==false){
	alert("Please choose a valid image file.");
      form.file_usr_image.focus();
	return false;
	}
return true;
}

//---------------------------------------------date validation----------------------------------------------------------
/**
 * DHTML date validation script. Courtesy of SmartWebby.com (http://www.smartwebby.com/dhtml/)
 */
// Declaring valid date character, minimum year and maximum year
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
}
//---------------------------------------------------end of date validation---------------------------------
/**
 * DHTML email validation script. Courtesy of SmartWebby.com (http://www.smartwebby.com/dhtml/)
 */

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 ValidateForm(frm){
	var emailID=document.regi_frm.txt_email
	
	if ((emailID.value==null)||(emailID.value=="")){
		alert("Please Enter your Email ID")
		emailID.focus()
		return false
	}
	if (echeck(emailID.value)==false){
		emailID.value=""
		emailID.focus()
		return false
	}
	return true
 }-->
*/
function getFileType(sValue)
{
  var aParts = sValue.split( "/" );
  var iParts = aParts.length;
  if( iParts >= 1 )
  {
    var sFile = aParts[ iParts - 1 ];
    var aFile = sFile.split( "." );
    if( aFile.length == 2 )
    {
      sName = aFile[0];
      sExt = aFile[1];
   //   alert("Filename is: "+sName+" extension is: "+sExt);
    }
    else
    {
      //alert("Bad filespec; should have one dot between name and extension");
	  //form.file_usr_image.focus();
	  return false;
    }
  }
  else
  {
    alert("No file selected");
  }
}
//----------------------------------login validation-----------------------------------
function login_valid(form){
	if(form.txt_id.value==""){
		alert("Please enter login id");
		form.txt_id.focus();
		return false;
	}
	if(form.txt_passs.value==""){
		alert("Please enter login password");
		form.txt_passs.focus();
		return false;
	}
	
}
//--------------------------------changepassword validation--------------------------------
function change_pass(form){
	if(form.old_pass.value==""){
	alert("Please enter your old password");
	form.old_pass.focus();
	return false
	}
	else if(form.new_pass.value==""){
	alert("Please enter your new password");
	form.new_pass.focus();
	return false
	}
	else if(form.new_pass.value.length < 6){
	alert("Password must be 6 characters in length.");
	form.new_pass.focus();
	return false
	}
	return true;
	}
	//--------------------------------------user_complains validation----------------------
	function user_complain(form){
		if(form.name.value==""){
			alert("Please enter your name");
			form.name.focus();
			return false;
		}else if(form.usr_id.value==""){
			alert("Please enter your user id");
			form.usr_id.focus();
			return false;
		}else if(form.email.value==""){
			alert("Please enter your email");
			form.email.focus();
			return false;
		}else if(form.message.value==""){
			alert("Please enter your message");
			form.message.focus();
			return false;
		}
		return true;
	}