//搜索框
function onenter(field) {
	if (field.value == field.defaultvalue)
	{field.value = "";}
}
function onexit(field) {
	if (field.value == "")
	{field.value = field.defaultvalue;}
}
function search(field) {
	var cateval = 0;
	var skeyval = document.getelementbyid('skey').value;
	if (skeyval == "搜索") {
		document.getelementbyid('skey').value="";
		alert('搜索');        
		return;    
	}
	if ($.trim(skeyval) == "") {
		alert('搜索');        
		return;    
	}
	document.getelementbyid('skey').value = skeyval.replace(">", "").replace("<", "");
}