Carregar primeiro e Mais rapido codigo javascript

CODE

<script type="text/javascript">

 // the cse class encapsulates a left and right search control

 // both controls are driven by a shared search form

 function cse() {

 var sFormDiv = document.getElementById("searchForm");

 var rightScDiv = document.getElementById("rightSearchControl");

 // create a left, right search control

 // create a custom search form

 this.rightControl = new GSearchControl();

 this.searchForm = new GSearchForm(true, sFormDiv);

 // bind clear and submit functions

 this.searchForm.setOnSubmitCallback(this, cse.prototype.onSubmit);

 this.searchForm.setOnClearCallback(this, cse.prototype.onClear);

 // set up for small result sets

 this.rightControl.setResultSetSize(GSearch.LARGE_RESULTSET);

 this.rightControl.setNoResultsString("No results");

 var searcher;

 var options;

 // configure right control for

 // -- cse for comparisons

 // -- cse for community

 // -- cse for shopping

 // -- blog search

 // -- video search

 <? if($gets[1] == "sites") {?>

 searcher = new GwebSearch();

 options = new GsearcherOptions();

 searcher.setSiteRestriction("016147173337712478936:hc9gjh7sqoe");

 //searcher.setUserDefinedLabel("Webs Gospel");

 options.setExpandMode(GSearchControl.EXPAND_MODE_OPEN);

 this.rightControl.addSearcher(searcher, options);

 <? } ?>

 // draw the left and right controls

 // the right control is drawn in tabbed mode

 var drawOptions = new GdrawOptions();

 drawOptions.setDrawMode(GSearchControl.DRAW_MODE_TABBED);

 this.rightControl.draw(rightScDiv, drawOptions);

 // execute a starter search

 this.searchForm.execute("palavrachave");

 }

 // when the form fires a submit, grab its

 // value and call the left and right control

 cse.prototype.onSubmit = function(form) {

 var q = form.input.value;

 if (q && q!= "") {

 this.rightControl.execute(q);

 }

 return false;

 }

 // when the form fires a clear, call the left and right control

 cse.prototype.onClear = function(form) {

 this.rightControl.clearAllResults();

 form.input.value = "";

 return false;

 }

 function OnLoad() {

 new cse();

 }

 GSearch.setOnLoadCallback(OnLoad);

 </script>

preciso fazer este codigo carregar primeiro que tudo na pagina, e se alguem souber deixar ele mais limpo.. agradeceria muitoo!!