// 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*$/,"")
	return val;
}
function JSvalid_form(formnm)
{
formnm=eval(formnm);
for(var i=0;i<formnm.elements.length;i++)
	{
if(formnm.elements[i].alt){
// START CHECK FOR BLANK
var altval=formnm.elements[i].alt;
var altval1=altval.split("~DM~");
if(altval1[0]=="BC" && RemoveLTSpace(formnm.elements[i].value)=="")
		{
		formnm.elements[i].value=RemoveLTSpace(formnm.elements[i].value);
		alert("Please enter "+altval1[1]);
		formnm.elements[i].focus();
		return false;
		}
// END CHECK FOR BLANK
// VALID CHAR CHECK
if(altval1[2]!="" && formnm.elements[i].value!="")
	{
var re = altval1[2];
if(formnm.elements[i].value.search(re)==-1)
		{
		alert("Invalid value in "+altval1[1]);
		formnm.elements[i].focus();
		formnm.elements[i].select();
		return false;
		}
	}
//START EMAIL CHECK
if(altval1[0]=="EMC")
{
  if (formnm.elements[i].value == "")
  {
    alert("Please enter a value for the \"email\" field.");
    formnm.elements[i].focus();
    return (false);
  }
  if (formnm.elements[i].value.search(/^\w+([-+.']\w+)*@\w+([-.]\w+)*\.\w+([-.]\w+)*$/)==-1)
  {
    alert("Please enter a complete email address in the form: yourname@yourdomain.com");
    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;
}

function isChecked(objCheckBox)
{
	
	
	var iIndex;
	//If checkbox object does not exist
	if(typeof(objCheckBox) != 'object')
	{
		return false;
	}
	
	//If there is only one checkbox
	if(typeof(objCheckBox[0]) != 'object')
	{
		return objCheckBox.checked;
	}
	else
	{
		var iChecked=0;
		
		for(iIndex=0; iIndex<objCheckBox.length; iIndex++)
		{
			if(objCheckBox[iIndex].checked == true)
			{
				return true;
			}
		}
		
		return false;		
	}
}


function valid_signup(formnm)
{
  if(!JSvalid_form(formnm))
   {
     return false;
    }
 }