function form_design() {
var a = document.getElementById('srchInput').value;
if(!a){
	YAHOO.util.Dom.replaceClass("srchInput", "form_bg2","form_bg");
	}else{
	YAHOO.util.Dom.replaceClass("srchInput", "form_bg2","form_bg2");
	}
}

function repCSS(){
	YAHOO.util.Dom.replaceClass("srchInput","form_bg","form_bg2");
}