//string is empty,"" or null
function isEmpty(str)
{
	var result = false;
	if(str == "" || str == null)
	{
		result = true;
	}
	
	return result;
}
//set default cookie
function setDefaultCookie(cookieName,cookieValue)
{
	var path = "/";
	setCookie(cookieName,cookieValue,"","",path)
}

//set cookie
function setCookie(cookieName,cookieValue,expiresDate,domainName,path)
{
	if(isEmpty(cookieName))
	{
		return ;
	}
	
	var result = cookieName + "=" + escape(cookieValue);
	if(isEmpty(expiresDate))
	{
		var tmpDate = new Date(2100,1,1);
		expiresDate = tmpDate.toGMTString()
	}
	
	result += ";expires="+expiresDate ;
	
	if(!isEmpty(domainName))
	{
		result += ";domain="+domainName ;
	}
	
	if(!isEmpty(path))
	{
		result += ";path="+escape(path);
	}
	
	//alert(result);
	
	document.cookie = result ;
}
//get cookie
function getCookie(sName)
{
	var result = null ;
	var aCookie = document.cookie.split("; ");
	for (var i=0; i < aCookie.length; i++)
	{
		var aCrumb = aCookie[i].split("=");
		if (sName == aCrumb[0]) 
		{
			result = unescape(aCrumb[1]);
		}
	}
    //alert(document.cookie);
	return result;
}

//set Html Input element focus
function setFocus(obj)
{
	try
	{
		if(typeof(obj) !="undefined")
		{
			obj.focus();
		}
	}
	catch (e)
	{
		top.window.status = e.message;
	}

}

function setFocusOnEnterdown(obj)
{
	if(event.keyCode==13)
	{
		setFocus(obj);
	}
	return false;	
}

function setEventOnEnterdown(eventHandler,param)
{
	if(event.keyCode != 13)
	{
		return false;
	}
	
	try
	{
		eval(eventHandler+"('"+param+"')");
	}
	catch(e)
	{
		alert(e.message);
	}
	
	return false ;
}