function ValSearch() 
{
	var fld = document.frmsearch.word.value;
	var err = "";
	
	if (fld.length == 0)
		err += "Enter search string\n";
	else if (hasInvalidText(fld))
		err += "Search string contains invalid characters\n";
		
	if (err)
	{
		alert(err);
		return false;
	}
	else		
		return true;
}
function hasInvalidText(param)
{  
	var flg = 0;
	var cmp = "<>?;'%$"
	var tst = "";
	for (var i = 0; i < param.length; i++)
	{
		tst = param.substring(i,i+1);
		if (cmp.indexOf(tst) > -1)
		{
			flg = 1;
			break;
		}
	}
	
	if (flg != 0)
		return true;
	else
		return false;
}