function init() {
	$('partner1').observe('mouseover', function(event){
		$('partner-tooltip').setStyle({'background-position':'center 25px'});
	});
	
	$('partner2').observe('mouseover', function(event){
		$('partner-tooltip').setStyle({'background-position':'center 20px'});
	});
	
	$('partner3').observe('mouseover', function(event){
		$('partner-tooltip').setStyle({'background-position':'center 15px'});
	});
	
	$('partner4').observe('mouseover', function(event){
		$('partner-tooltip').setStyle({'background-position':'center 10px'});
	});
	
	$('partner5').observe('mouseover', function(event){
		$('partner-tooltip').setStyle({'background-position':'center 5px'});
	});
	
	$('partner1').observe('mouseout', function(event){
		$('partner-tooltip').setStyle({'background-position':'center 0'});
	});
	
	$('partner2').observe('mouseout', function(event){
		$('partner-tooltip').setStyle({'background-position':'center 0'});
	});
	
	$('partner3').observe('mouseout', function(event){
		$('partner-tooltip').setStyle({'background-position':'center 0'});
	});
	
	$('partner4').observe('mouseout', function(event){
		$('partner-tooltip').setStyle({'background-position':'center 0'});
	});
	
	$('partner5').observe('mouseout', function(event){
		$('partner-tooltip').setStyle({'background-position':'center 0'});
	});
	
	$('name').observe('focus', function(event){
		if (Event.element(event).value == 'نام') {
			Event.element(event).value = '';
		}
	});
	
	$('name').observe('blur', function(event){
		if (Event.element(event).value == '') {
			Event.element(event).value = 'نام';
		}
	});
	
	$('email').observe('focus', function(event){
		if (Event.element(event).value == 'ایمیل') {
			Event.element(event).value = '';
			Event.element(event).setStyle({'direction':'ltr'});
		}
	});
	
	$('email').observe('blur', function(event){
		if (Event.element(event).value == '') {
			Event.element(event).value = 'ایمیل';
			Event.element(event).setStyle({'direction':'rtl'});
		}
	});
	
	$('submit').observe('mouseover', function(event){
		Event.element(event).setStyle({'background':'none'});
	});
	
	$('submit').observe('mouseout', function(event){
		Event.element(event).setStyle({'background':'transparent url(images/submit-normal.png) no-repeat'});
	});
}

window.onload = init;