TinyMCE Installation

im trying to install tinymce but for some reason i can not get it.
and i see where there is a link that says disable rich text under my text areas but i dont see the tinymce show

here is the javascript from the source of my node/add/page page

tinyMCE.init({ mode : "exact", theme : "advanced", relative_urls : false, document_base_url : "/pragati/", language : "en", safari_warning : false, entity_encoding : "raw", verify_html : false, preformatted : false, convert_fonts_to_spans : true, remove_linebreaks : false, apply_source_formatting : true, theme_advanced_resize_horizontal : false, theme_advanced_resizing_use_cookie : false, plugins : "", theme_advanced_toolbar_location : "bottom", theme_advanced_toolbar_align : "left", theme_advanced_path_location : "top", theme_advanced_resizing : true, theme_advanced_blockformats : "p,address,pre,h1,h2,h3,h4,h5,h6", theme_advanced_buttons1 : "bold,italic,underline,strikethrough,hr,cut,paste", theme_advanced_buttons2 : "", theme_advanced_buttons3 : "", elements : "edit-body" });

can you tell me were is the mistake.
thanks