if (!applesearch) var applesearch = {};

applesearch.init = function() {
	// add applesearch css for non-safari, dom-capable browsers
	if (navigator.userAgent.toLowerCase().indexOf('safari') < 0  && document.getElementById) {
		this.clearBtn = false;
		
		// add style sheet if not safari
		var dummy = document.getElementById("dummy_css");
		if (dummy) dummy.href = "/shared/applesearch.css";
	}
}

// called when on user input - toggles clear fld btn
applesearch.onChange = function(fldID, btnID) {
	// check whether to show delete button
	var fld = document.getElementById(fldID);
	var btn = document.getElementById(btnID);
	if (fld.value.length > 0 && !this.clearBtn) {
		btn.style.background = "#8f9192 url('/images/srch_r_f2.gif') no-repeat top left";
		btn.fldID = fldID; // btn remembers it's field
		btn.onclick = this.clearBtnClick;
		this.clearBtn = true;
	} else if (fld.value.length == 0 && this.clearBtn) {
		btn.style.background = "#8f9192 url('/images/srch_r.gif') no-repeat top left";
		btn.onclick = null;
		this.clearBtn = false;
	}
}

// clears field
applesearch.clearFld = function(fldID, btnID) {
	var fld = document.getElementById(fldID);
	fld.value = "";
	this.onChange(fldID, btnID);
}

// called by btn.onclick event handler - calls clearFld for this button
applesearch.clearBtnClick = function(){
	applesearch.clearFld(this.fldID, this.id);
}