/* * * Author: Ashutosh Raghuwanshi. * E-Mail: ashutosh@pragya.net.in * URL : http://pragya.net.in * Notice: You may freely use this script as long as you keep this banner as it is. * */ /*@cc_on @*/ /*@if (@_jscript_version > 3) try{window.status = "Using JScript version " + @_jscript_version;}catch(exception){} @else @*/ alert("You need a more recent script engine."); /*@end @*/ /* * -: INSTALL INSTRUCTION :- * * 3) At first put this line before :- * * * * 1) Enclose all html inside the with a
or table tag. * 2) Set the attribute of
as the following one:- * * * * 3) After that put this line before :- * * * * 4) Copy "up_scrol.gif" and "dn_scrol.gif" files to the same folder as the HTML page. * 5) Add the menu.css to the page between and , like this:- * * * */ var Scroller_Exists=true; var Going_Up = false; var Timer = 0; var Up_Limit; var Down_Limit; function Step(Delta, ULimit, DLimit){ var cur_pos = parseInt(document.all.menus.offsetTop); var Incr = Delta; if(Delta > 0 && cur_pos == DLimit) return; if(Delta < 0 && cur_pos == ULimit) return; if(Delta > 0 && cur_pos+Incr > DLimit){ cur_pos = DLimit; Incr=0;} if(Delta < 0 && cur_pos+Incr < ULimit){ cur_pos = ULimit; Incr=0;} document.all.menus.style.top = "" + (cur_pos + Incr) + "px"; if(document.onscroll != null) document.onscroll(); } function Scroll(obj){ obj.style.borderStyle = "inset"; Going_Up = (obj.title == "Scroll Down"); obj.all.trow.style.verticalAlign = Going_Up ? "bottom" : "top"; clearInterval(Timer); Up_Limit = document.body.clientHeight - document.all.menus.offsetHeight - document.all.down_scroller.offsetHeight; Down_Limit = document.all.down_scroller.offsetHeight; Timer = setInterval("Step(" + (Going_Up ? (-4) : 4) + ", "+ Up_Limit +", " + Down_Limit + ")", 25); } function Scroll_Fast(){ clearInterval(Timer); Timer=setInterval("Step(" + (Going_Up ? (-20) : 20) + ", " + Up_Limit + ", " + Down_Limit + ")", 25); } function Stop_Scroll(obj){ obj.style.borderStyle = "outset"; clearInterval(Timer); obj.all.trow.style.verticalAlign = "middle"; } function set_scroller_pos(){ if((document.all.menus.offsetHeight) > document.body.clientHeight){ if(!Scroller_Exists){ document.all.menus.style.top = document.all.down_scroller.offsetHeight; document.all.up_scroller.style.visibility = "visible"; document.all.down_scroller.style.visibility = "visible"; Scroller_Exists = true; } document.all.up_scroller.style.top = "0px"; //alert(document.all.down_scroller.style.top = "" + (document.body.offsetHeight-document.all.down_scroller.offsetHeight) + "px"); } else{ document.all.menus.style.top = 0; document.all.up_scroller.style.visibility = "hidden"; document.all.down_scroller.style.visibility = "hidden"; Scroller_Exists = false; } } function handle_wheel(){ Up_Limit = document.body.clientHeight - document.all.menus.offsetHeight - document.all.down_scroller.offsetHeight; Down_Limit = document.all.down_scroller.offsetHeight; Step(event.wheelDelta, Up_Limit, Down_Limit); } function attach_scroller(){ document.write(''); document.write(''); document.write(' '); document.write(''); document.write('
Up
'); document.write(''); document.write(''); document.write(' '); document.write(''); document.write('
Down
'); set_scroller_pos(); document.body.onresize = set_scroller_pos; document.onmousewheel = handle_wheel; }