// validation for e-mail
function isEmailAddr(email)
{
  var result = false
  var theStr = new String(email)
  var index = theStr.indexOf("@");
  if (index > 0)
  {
    var pindex = theStr.indexOf(".",index);
    if ((pindex > index+1) && (theStr.length > pindex+1))
	result = true;
  }
  return result;
}

// this function used to check valid chars
function check_validchar(pattern,str)
{
  var re = new RegExp(pattern,"g");
  var arr = re.test(str);
   return arr;
}  

// get element value after removing leading and trailing spaces
function RemoveLTSpace(elemval)
{
	var val=elemval.replace(/\s*/,"")
	var val=val.replace(/\s*$/,"")
	return val;
}
function JSvalid_form(formnm)
{
	formnm=eval(formnm);
	for(var i=0;i<formnm.elements.length;i++){
		if(formnm.elements[i].alt){
			// START CHECK FOR BLANK
			var altval=formnm.elements[i].alt;
			var altval1=altval.split("~DM~");
			if(altval1[0]=="BC" && RemoveLTSpace(formnm.elements[i].value)=="" && formnm.elements[i].disabled == false){
				formnm.elements[i].value=RemoveLTSpace(formnm.elements[i].value);
				alert("Please complete the field '"+altval1[1]+"'");
				formnm.elements[i].focus();
				return false;
			}
			// END CHECK FOR BLANK				
			
			// VALID CHAR CHECK
			if(altval1[2]!="" && formnm.elements[i].value!=""){
				var re1 = new RegExp ('&q', 'g') ;
				var pattern_val = altval1[2].replace(re1,'"') ;
				var pattern="["+pattern_val+"]";
				var re = new RegExp(pattern,"g");
				if(re.test(formnm.elements[i].value)==true){
					alert("Please avoid entering characters \""+pattern_val+"\" in field '"+altval1[1]+"'");
					formnm.elements[i].focus();
					formnm.elements[i].select();
					return false;
				}
			}

			//START EMAIL CHECK
			if(altval1[0]=="EMC"){
				if (formnm.elements[i].value == ""){
					alert("Please complete the field 'E-mail'");
					formnm.elements[i].focus();
					return (false);
				}
				if (!isEmailAddr(formnm.elements[i].value)){
					alert("Please enter a complete e-mail address in the form: yourname@yourdomain");
					formnm.elements[i].focus();
					formnm.elements[i].select();
					return (false);
				}
				if (formnm.elements[i].value.length < 3){
					alert("Please enter at least 3 characters in the 'E-mail' field.");
					formnm.elements[i].focus();
					formnm.elements[i].select();
					return (false);
				}
			}
			// END EMAIL CHECK
		}
	}
	return true;
}

// function for password match
function password_match(pass1,pass2)
{
pass1=eval(pass1);
pass2=eval(pass2);
	if(pass1.value!=pass2.value)
	{
		return false;
	}
return true;
}