// JavaScript Document
var cObj;
function doHover(obj){
	if(cObj!=obj){obj.className=obj.className+'_hover';cObj=obj;}
	else{obj.className=cObj.className.substr(0,cObj.className.length-6);cObj=null;}	
}
function enterTB(obj, defval){if(obj.value==defval)obj.value=''}
function leaveTB(obj, defval){if(obj.value=='')obj.value=defval}