function enableField(field){
    if(field.value=='Search'){
        field.className='search_content';
        field.value='';
		field.style.color='#333';
    }
}
function reenableField(field){
	field.className='search_content';
	field.style.color='#AAA';
	field.style.width='100px';
	enableField(this);
	var classField = document.getElementById("search_content");
	if(classField.value==''){
		field.value='Search';
	} else if(classField.value!='Search'){
		field.style.color='#333';
		field.className='search_content';
	}
}