function checkData()
{
for(var i=0;
i<document.form_search.sw.value.length;i++)
{if (document.form_search.sw.value.charAt(i)!=" ")return true;}
return false;}

if (document.images) 
{
   img1 = new Image();
   img1.src = "images/symbol.gif";
}
function clearTip(field)
		{
			if(field.defaultValue == field.value)
			field.value = "";
		}

		function writeTip(field)
		{
			if(field.value == "")
				field.value = field.defaultValue;
		}
function checkData()
	{
	for(var i=0;i<document.form_search.sw.value.length;i++)
	{
	if (document.form_search.sw.value.charAt(i)!=" ")return true;
	}
	return false;
	}