function initSearch() {
	if (search_term = document.getElementById('search_term')) {
	  search_term.onfocus = function() {
	  	  if (this.value == 'type your search text') {
	  	  	this.value = '';
	  	  }
	    };
	  search_term.onblur = function() {
	  	  if (this.value == '') {
	  	  	this.value = 'type your search text';
	  	  }
	    };
	}
}

if (document.getElementById)
  window.onload=function() {
    initSearch();     
  };