function alphaRender(sender,alpha)
{
    if (sender.filters)
      sender.filters.alpha.opacity=alpha*100
    else
      sender.style.MozOpacity=alpha
}

function PopulateHiddenField (sender,formId, field,val)
{

	//var obj = sender.document.getElementById (field) ;
	var obj = document.getElementById (field) ;
	if ( obj == null ) { return ; }
	obj.value = val;
  SubmitForm(this,formId,false);
}

function SubmitForm (sender, formId, askConfirm)
{
	if ( typeof(askConfirm) == 'undefined' )
		askConfirm = false;
	
	var valid = true ;
	if ( askConfirm )
		valid = confirm ('Do you confirm your action ?') ;
	
	if ( valid )
	{
		if ( typeof(formId) == 'undefined' )
		{
			sender.document.forms[0].submit () ;
		}
		else
		{
			//var objForm = sender.document.getElementById (formId) ;
			var objForm = document.getElementById (formId) ;
			objForm.submit() ;
		}
	}
}