function searchOn(element) {
	element.className = 'search-on';
	element.value = '';
}

function searchOff(element) {
	element.className = 'search-off';
    element.value = element.getAttribute('placeholder');
}

function setPlaceholder(element) {
    element.value = element.getAttribute('placeholder');
    element.onfocus = function() {
    	if (this.value == this.getAttribute('placeholder')) searchOn(this);
     	return false;
    }
    element.onblur = function() {
    	if (this.value.length < 1) searchOff(this);
    }
}