/* Main Page Scripts */
/* navbar */

function init_page() {
   init_dropdowns();
   init_search_dropdown();      
   init_tabs();
}

var dmenu=0;

function init_search_dropdown() {
   var elts = document.getElementsByTagName('div');
	  
   for (var i=0; i < elts.length; i++) {
      var e = elts[i];
  
      if (e.className == 'search_dropdown') {
			e.onclick = dropdown_on2;
			e.onmouseout = dropdown_off2;
			dmenu=e;
      }
	  if (e.className == 'search_dropdown_imenu'){
		   e.onmouseover=dropdown_on;
		   e.onmouseout=dropdown_off2;

	  }
   }
}

function dropdown_on2() {
   var t = dmenu.getElementsByTagName('table')[0];
   if (t.style.display!='block')
   t.style.display = 'block';
   else
   t.style.display='none';
}

function dropdown_off2() {
	var t=dmenu.getElementsByTagName('table')[0];
	 t.style.display = 'none';
}

function init_dropdowns() {
   var elts = document.getElementsByTagName('div');
   for (var i=0; i < elts.length; i++) {
      var e = elts[i];
      if (e.className == 'dropdown') {
         e.onmouseover = dropdown_on;
         e.onmouseout = dropdown_off;
      }
   }
}

function dropdown_on() {
   var t = this.getElementsByTagName('table')[0];
   t.style.display = 'block';
}

function dropdown_off() {
   var t = this.getElementsByTagName('table')[0];
   t.style.display = 'none';
}

function init_tabs() {
   var elts = document.getElementsByTagName('a');
   for (var i=0; i < elts.length; i++) {
      var e = elts[i];
      if (e.className == 'rollover') {
         e.onmouseover = rollover_on;
         e.onmouseout = rollover_off;
      }
   }
}

function rollover_on() {
   var img = this.childNodes[0];
   img.src = img.src.replace('_off','_on');
}

function rollover_off() {
   var img = this.childNodes[0];
   img.src = img.src.replace('_on','_off');

}



onload = init_page;