function sliderField(dom){
	dom.style.display = 'none';
	if( dom.previousSibling.attachEvent ){
	   dom.previousSibling.attachEvent('onclick', 'showAndHideField(this)');
	} else {
	   dom.previousSibling.setAttribute('onclick', 'showAndHideField(this)'); 
	}
}

function showAndHideField(dom){
	this.nextSibling.style.display == "none" ? this.nextSibling.blindDown() : this.nextSibling.blindUp()

}