function gotopree()
{
	var tag = "Y"
	if (tag=="Y" & document.gbookform.contentinfo.value.length ==0 ) {
		alert('ÇëÄúÌîдÁôÑÔÄÚÈÝ!');
		tag = "N"
	} else {
		if(document.gbookform.contentinfo.value.length > 200){
			alert('Äú×î¶àÁôÑÔ200¸ö×Ö!');
			tag = "N";
		}
	}
	if (tag=="Y")
	{
		document.gbookform.submit();
        document.gbookform.contentinfo.value="";
	}	
	
}

function clrarea()
{
        document.gbookform.content.value="";
}
function clrfrom()
{
        document.gbookform.reset();
}