//inital page load set media type
var mainSearchMediaType = document.getElementById("mainSearchMediaType");
var FieldsToPass = new Array("mainSearchMediaType");
var objAjax = new Ajax.Autocompleter('txtMainSearch','divupdate', baseUrl + 'AJAXMainSearch.aspx',{paramName:'search',token:',',frequency:0.4,minChars:4,fields:FieldsToPass});
setSelected(mainSearchMediaType.value, true);

//reset media type when clicking on search tabs
function setSelected(id, IsPageLoad){
	//set search to media type
	mainSearchMediaType.value = id;

	//changes the on state of the search tabs
	tabName = 'tab' + id;
	var tabs=['tab0','tab1','tab2','tab3','tab4'];
	for(var i=0; i<tabs.length; i++) {
		if (document.getElementById(tabs[i])) {
		obj=document.getElementById(tabs[i]);
		obj.className=(tabs[i]==tabName)? "selected" : "";
		}
	}
	if (!IsPageLoad) {
		objAjax.onKeyPress();   // update the pull-down with results from new mediatype
		document.getElementById('txtMainSearch').focus();
	}
}