function preload_image(image_name,image_src){if(document.images){eval(image_name+' = new Image()');eval(image_name+'.src = "'+image_src+'"');}}
function change_image(image_name,image_src){if(document.images){document.images[image_name].src=image_src;}}
function open_window(page_url,page_name,window_width,window_height,scrollbar_value,is_center){var window_pos_x=20;var window_pos_y=20;if(is_center=='yes'){window_pos_x=(screen.width/2)-(window_width/2);window_pos_y=(screen.height/2)-(window_height/2);}
popup_window=this.open(page_url,page_name,"toolbar=no,status=no,menubar=no,location=no,scrollbars="+scrollbar_value+",resizable=no,width="+window_width+",height="+window_height+",screenX="+window_pos_x+",screenY="+window_pos_y+",left="+window_pos_x+",top="+window_pos_y);popup_window.resizeTo(window_width+6,window_height+54);popup_window.focus();}
function anti_spam_email(user,domain,linktext){var username=user;var hostname=domain;if(linktext==''){linktext=username+"@"+hostname;}
document.write("<a href="+"mail"+"to:"+username+"&#064;"+hostname+">"+linktext+"</a>");}
function show_hide_element(id){var my_element=document.getElementById(id);if(my_element.style.display=="none"){my_element.style.display="block";}else{my_element.style.display="none";}}