function doRedirect(path){ window.location.href=path; }

function goBack(){ history.back(); }

function toggleAllCheckboxes(root_checkbox, o_form){
  var set_value_to = root_checkbox.checked;
  for (var i = 0; i < o_form.elements.length; i++)  {
    if (o_form.elements[i].type == "checkbox"){
      o_form.elements[i].checked = set_value_to;
    }
  }
}

function openFile(file_path,ht,wd){
  newWindow = window.open(file_path,"opener_file","status=no,menubar=no,toolbar=no,resizable=no,scrollbar=yes,height="+ht+",width="+wd);
  newWindow.focus( );
}

function strTrim(sString){
	while (sString.substring(0,1) == ' ')	{
		sString = sString.substring(1, sString.length);
	}
	while (sString.substring(sString.length-1, sString.length) == ' ')	{
		sString = sString.substring(0,sString.length-1);
	}
	return sString;
}

function isAlphabet(str){
  if((str=='a')||(str=='b')||(str=='c')||(str=='d')||(str=='e')||(str=='f')||(str=='g')||(str=='h')||(str=='i')||(str=='j')||(str=='k')||(str=='l')||(str=='m')||(str=='n')||(str=='o')||(str=='p')||(str=='q')||(str=='r')||(str=='s')||(str=='t')||(str=='u')||(str=='v')||(str=='w')||(str=='x')||(str=='y')||(str=='z')||(str=='A')||(str=='B')||(str=='C')||(str=='D')||(str=='E')||(str=='F')||(str=='G')||(str=='H')||(str=='I')||(str=='J')||(str=='K')||(str=='L')||(str=='M')||(str=='N')||(str=='O')||(str=='P')||(str=='Q')||(str=='R')||(str=='S')||(str=='T')||(str=='U')||(str=='V')||(str=='W')||(str=='X')||(str=='Y')||(str=='Z'))
    return true;
  else
    return false;
}

function isDecimal(field){
  var validTxt = /^[0-9.]+$/
  var msg = "Not a valid decimal.";
  if (! validTxt.test(field.value)){
    return false;
  }else{
    return true;
  }
}

function isEmail(emailStr) {
	var emailPat=/^(.+)@(.+)$/ ;
	var specialChars="\\(\\)<>@,;:\\\\\\\"\\.\\[\\]";
	var validChars="\[^\\s" + specialChars + "\]";
	var quotedUser="(\"[^\"]*\")";
	var ipDomainPat=/^\[(\d{1,3})\.(\d{1,3})\.(\d{1,3})\.(\d{1,3})\]$/ ;
	var atom=validChars + '+' ;
	var word="(" + atom + "|" + quotedUser + ")";
	var userPat=new RegExp("^" + word + "(\\." + word + ")*$");
	var domainPat=new RegExp("^" + atom + "(\\." + atom +")*$");
	var matchArray=emailStr.match(emailPat);
	if (matchArray==null) 	{
		//alert("Email address seems incorrect (check @ and .'s)");
		return false;
	}
	var user=matchArray[1];
	var domain=matchArray[2];
	if (user.match(userPat)==null){
		//alert("The username doesn't seem to be valid.");
		return false;
	}
	var IPArray=domain.match(ipDomainPat);
	if (IPArray!=null){
		  for (var i=1;i<=4;i++){
			if (IPArray[i]>255){
				//alert("Destination IP address is invalid!");
				return false;
			}
		}
		return true;
	}
	var domainArray=domain.match(domainPat);
	if (domainArray==null){
		//alert("The domain name doesn't seem to be valid.");
		return false;
	}
	var atomPat=new RegExp(atom,"g");
	var domArr=domain.match(atomPat);
	var len=domArr.length;
	if (domArr[domArr.length-1].length<2 || domArr[domArr.length-1].length>3){
	   //alert("The address must end in a three-letter domain, or two letter country.");
	   return false;
	}
	if (len<2){
	   //alert("This address is missing a hostname!");
	   return false;
	}
	return true;
}