var RollIt = {
    timeout : null,
    showPopup : function(e){
        clearTimeout(this.timeout);
        if($(e).style.display == 'none'){
            this.timeout = setTimeout(function(){new Effect.BlindDown(e, {duration:.3, fps:40})},400);
        }
    },
    hidePopup : function(e){
        if($(e).style.display == 'none'){
            clearTimeout(this.timeout);
        }else{
            this.timeout = setTimeout(function(){new Effect.BlindUp(e, {duration:.3, fps:40})},300);
        }
    }    
}

function getElementsByClassName(oElm, strTagName, strClassName){
    var arrElements = (strTagName == "*" && oElm.all)? oElm.all : oElm.getElementsByTagName(strTagName);
    var arrReturnElements = new Array();
    strClassName = strClassName.replace(/\-/g, "\\-");
    var oRegExp = new RegExp("(^|\\s)" + strClassName + "(\\s|$)");
    var oElement;
    for(var i=0; i<arrElements.length; i++){
        oElement = arrElements[i];      
        if(oRegExp.test(oElement.className)){
            arrReturnElements.push(oElement);
        }   
    }
    return (arrReturnElements)
}

function isNumeric(sText) {
   var ValidChars = "0123456789.";
   var isNumber=true;
   var Char;

   for (i = 0; i < sText.length && isNumber == true; i++) 
      { 
      Char = sText.charAt(i); 
      if (ValidChars.indexOf(Char) == -1) 
         {
         isNumber = false;
         }
      }
   return isNumber;   
}