//num1からnum2の間の数値をランダムに返す汎用関数
function rangeRandom(num1,num2) {

        if((num1 - num2) > 0)   {
                var big = num1
                var small = num2
        } else  {
                var big = num2
                var small = num1
        }
        var range = big - small + 1
		var number = Math.floor(Math.random()*range)+ small
		return(number);
		
		
}

function randombirdImg()   {
	var Gasen=true; var Gaseniro="yellowgreen"
        var img_src = "./center/birdcenter/" + rangeRandom(1,3056) + ".jpg"
        document.write("<IMG SRC='" + img_src + "'>")
}

//num1からnum2の間の数値をランダムに返す汎用関数
function rangeRandom(num1,num2) {
        if((num1 - num2) > 0)   {
                var big = num1
                var small = num2
        } else  {
                var big = num2
                var small = num1
        }
        var range = big - small + 1
        var number = Math.floor(Math.random()*range) + small
        return(number)
}

function randomImg()    {var Gasen=true; var Gaseniro="yellowgreen"
        var img_src = "./center/hicenter/" + rangeRandom(1,3025) + ".jpg"
        document.write("<IMG SRC='" + img_src + "'>")
}
//num1からnum2の間の数値をランダムに返す汎用関数
function rangeRandom(num1,num2) {
        if((num1 - num2) > 0)   {
                var big = num1
                var small = num2
        } else  {
                var big = num2
                var small = num1
        }
        var range = big - small + 1
        var number = Math.floor(Math.random()*range) + small
        return(number)
}

function randomcycleImg()    {var Gasen=true; var Gaseniro="yellowgreen"
        var img_src = "./center/cyclecenter/" + rangeRandom(1,1683) + ".jpg"
        document.write("<IMG SRC='" + img_src + "'>")
}
//num1からnum2の間の数値をランダムに返す汎用関数
function rangeRandom(num1,num2) {
        if((num1 - num2) > 0)   {
                var big = num1
                var small = num2
        } else  {
                var big = num2
                var small = num1
        }
        var range = big - small + 1
        var number = Math.floor(Math.random()*range) + small
        return(number)
}

function randomdogImg()    {var Gasen=true; var Gaseniro="yellowgreen"
        var img_src = "./center/dogcenter/" + rangeRandom(1,1187) + ".jpg"
        document.write("<IMG SRC='" + img_src + "'>")
}
//num1からnum2の間の数値をランダムに返す汎用関数
function rangeRandom(num1,num2) {
        if((num1 - num2) > 0)   {
                var big = num1
                var small = num2
        } else  {
                var big = num2
                var small = num1
        }
        var range = big - small + 1
        var number = Math.floor(Math.random()*range) + small
        return(number)
}

function randomtopImg()    {var Gasen=true; var Gaseniro="yellowgreen"
        var img_src = "./center/topcenter/" + rangeRandom(1,523) + ".jpg"
        document.write("<IMG SRC='" + img_src + "'>")
}