function trim_it(field1) {
while(''+field1.value.charAt(0)==' ') {
   field1.value=field1.value.substring(1,field1.value.length);
}
while(''+field1.value.charAt(field1.value.length-1)==' ') {
   field1.value=field1.value.substring(0,field1.value.length-1);
}
}

function empty_check(field1, fieldName) {
trim_it(field1);
if (field1.value == "") {
   field1.select();
   alert(fieldName + " can not be left empty.");
   field1.focus();
   return false;
}
return true;
}

// Email Validation. Written by PerlScriptsJavaScripts.com

function f_checkMailid(mailid,message){

 trim_it(mailid);
 e=mailid.value;

     if(e=='' || e==null){
     alert(mailid.name + " can't be left empty" );
     mailid.focus();
     mailid.select();
     return false;
     }

 ok = "1234567890qwertyuiop[]asdfghjklzxcvbnm.@-_QWERTYUIOPASDFGHJKLZXCVBNM";

   for(i=0; i < e.length ;i++){
	if(ok.indexOf(e.charAt(i))<0){ 
	alert("Check" + message);
                  mailid.focus();
	mailid.select();
       	return (false);                  
	}	
    } 

   if (document.images) {                 
	re = /(@.*@)|(\.\.)|(^\.)|(^@)|(@$)|(\.$)|(@\.)/;
	re_two = /^.+\@(\[?)[a-zA-Z0-9\-\.]+\.([a-zA-Z]{2,4}|[0-9]{1,3})(\]?)$/;
	if (!e.match(re) && e.match(re_two)) {	
	return (-1);		
	}else{
	alert("Check " + message);
                  mailid.focus();
	mailid.select();
	return false;
	}
   }
}

// validating name

function validate_name(field,message) {
trim_it(field);
var valid = " abcdefghijklmnopqrstuvwxyz0123456789_."
var ok = "yes";
var temp;

   if(field.value=='' || field.value==null){
     alert("" + message);
     field.focus();
     return false; 
     }


  for (var i=0; i<field.value.length; i++) {
        temp = "" + field.value.substring(i, i+1);
        temp = temp.toLowerCase();
        if (valid.indexOf(temp) == "-1") {
           ok = "no";
           }
  }

  if (ok == "no") {
     alert("Invalid name!  Only alphabets, numbers, underscore and periods are accepted!");
     field.focus();
     field.select();
     return false;
  }else
     return true;  

}

function validatePh(field) {
var valid = "-0123456789"
var ok = "yes";
var temp;
for (var i=0; i<field.value.length; i++) {
temp = "" + field.value.substring(i, i+1);
if (valid.indexOf(temp) == "-1") ok = "no";
}
if (ok == "no") {
alert("Invalid entry!  Only numbers are accepted,you can use 'Hyphen'  to seperate country and area code!");
field.focus();
field.select();
return false;
   }else
    return true; 
}