var timer_id;
var diff;
var sb_length; //the length of scroll bar
var t_inc=0;
var c_height;
var ratio=0;
var scroll_dis;
		
function start(){
/*
	var if_height=document.all.ifa.height;
	sb_length=if_height-54;
	scroll_dis=if_height-92;
	c_height=window.frames["ifa"].document.body.scrollHeight;
	diff=c_height-if_height;
	
	if (diff>0) {
		ratio=scroll_dis/diff;
	} else {
		ratio=1;
		diff=0;
		document.getElementById("im_tab").style.background="";
	}
	document.onmousedown = MD;
	document.onmousemove = MM;
	document.onmouseup = MU;
*/
}
		
function scroll_iframe(frm,inc,dir) {
  if (timer_id) clearTimeout(timer_id);

  if (window.frames[frm]) {
	//if (t_inc+inc<=diff && inc>0 || t_inc+inc>0 && inc<0) {
	    if (dir == "v") {
			window.frames[frm].scrollBy(0, inc);
//			t_inc+=inc;
//			b_inc=t_inc*ratio;
			//document.getElementById("tab_div").style.top=b_inc;
		}
	    timer_id = setTimeout("scroll_iframe('" + frm + "'," + inc + ",'" + dir + "')", 20);
	//}
  }
}

function stopScroll() { if (timer_id) clearTimeout(timer_id); }

//window.setTimeout("start()",3000);

var lx=896;
var rx=913;
var ty=245;
var by=478;
var mp=false;
var msing=true;

function MD(e) {
/*	var ex=event.clientX+window.document.body.scrollLeft;
	var ey=event.clientY+window.document.body.scrollTop;

	if (ex>=lx && ex<=rx && ey>=ty && ey<=by && mp==false) {
		mp=true;
		var limit=ey-ty-20;
		if (limit < 0) {
			//document.getElementById("tab_div").style.top=0;
			window.frames["ifa"].scrollTo(0,0);
			t_inc=0;
		} else if (limit > scroll_dis) {
			//document.getElementById("tab_div").style.top=scroll_dis;
			window.frames["ifa"].scrollTo(0,diff);
			t_inc=diff;
		} else {
			//document.getElementById("tab_div").style.top=limit;
			window.frames["ifa"].scrollTo(0,limit/ratio);
			t_inc=limit/ratio;
		}
	} else {
		mp=false;
	}
*/
}

function MM(e) {
/*
	var ex=event.clientX+window.document.body.scrollLeft;
	var ey=event.clientY+window.document.body.scrollTop;
	if (mp==true) {
		//if (ex>=lx && ex<=rx+5 &&  ey>=ty && ey<=by) {
			var limit=ey-ty-20;
			if (limit < 0) {
				//document.getElementById("tab_div").style.top=0;
				window.frames["ifa"].scrollTo(0,0);
				t_inc=0;
			} else if (limit > scroll_dis) {
				//document.getElementById("tab_div").style.top=scroll_dis;
				window.frames["ifa"].scrollTo(0,diff);
				t_inc=diff;
			} else {
				//document.getElementById("tab_div").style.top=limit;
				window.frames["ifa"].scrollTo(0,limit/ratio);
				t_inc=limit/ratio;
			}
		//} else {
			//mp=false;
		//}
	}
*/
}
function MU(e) {
//	mp=false;
}
function MS(st) {
//	document.getElementById("tab_div").style.top=parseInt(st*ratio,10);
//	t_inc=st;
}