// HOME SLIDESHOW
////////////////////////////////////////////////////
window.onload = function() {		
  so.write(divId);
  document.getElementById('search_box').onfocus = function() {
    this.className = "form_focus_on";
    if(this.value == "enter a keyword") {
      this.value = "";
    }
  }
		
		document.getElementById('search_box').onblur = function() {
    this.className = "form_focus_off";
				if(this.value == "") {
					this.value = "enter a keyword";
				}
  }
}

function change_tab(tab_num) {
  hide_tabs();
		document.getElementById('tab_' + tab_num).style.display = "block";
		document.getElementById('tab_button_' + tab_num).className = "tab_on";
}

function hide_tabs() {
  document.getElementById('tab_1').style.display = "none";
		document.getElementById('tab_2').style.display = "none";
		document.getElementById('tab_3').style.display = "none";
		document.getElementById('tab_4').style.display = "none";
		
		document.getElementById('tab_button_1').className = "tab_off";
		document.getElementById('tab_button_2').className = "tab_off";
		document.getElementById('tab_button_3').className = "tab_off";
		document.getElementById('tab_button_4').className = "tab_off";
}