var defaultSpeed = -0.2;
var slideX = Array();
var slideSpeed = Array();
var slideID = Array();
var styleCnt = 116;            // 画像数

function scroll_layer(layerId) {
	document.getElementById(layerId).style.width = 61*styleCnt+61*12 + 'px';
	if(!slideX[layerId]) {
		slideX[layerId] = 0;
		slideSpeed[layerId] = defaultSpeed;
	}

	if(slideX[layerId] < 61*styleCnt*-1) slideX[layerId] = 0;
	if(slideX[layerId] > 0) slideX[layerId] = 61*styleCnt*-1;
	slideX[layerId]+=slideSpeed[layerId];
	if( document.getElementById ) {
		document.getElementById(layerId).style.left = slideX[layerId] + 'px';
	} else if ( document.layers ) {
		document.layers[layerId].moveTo(slideX[layerId] + 'px',0);
	} else if ( document.all ) {
		document.all(layerId).style.pixelLeft=slideX[layerId] + 'px';
	}
	slideID[layerId] = setTimeout('scroll_layer("'+layerId+'")', 10);
}

function scroll_over(layerId,e) {
	slideSpeed[layerId] = ( 500 - e.clientX ) / 100;
}