wat doe ik toch fout? (Opgelost)

<script type="text/javascript">
function maak_start(){
	aantal = document.m_form.m_lengte.value;
	var temp = new Array();
	temp = aantal.split('');
	alerto=2;
	for(i=0;i<temp.length;i++){
		if(alerto!=1){
			a=0;
			alert('test');
			if(temp[i] == 0 || temp[i] == 1 || temp[i] == 2 || temp[i] == 3 || temp[i] == 4 || temp[i] == 5 || temp[i] == 6 || temp[i] == 7 || temp[i] == 8 || temp[i] == 9){a=1;}
			if(a!=0){
				alerto = 1;
			}
			if(i==temp.length-1 && alerto != 1){
				for(j=0;j<aantal;j++){
					noot = (Math.round(Math.random()*4+1))+".gif";
					document.getElementById("muziek").innerHTML+="<img style='border:1px solid #000000; width:20px; height:100px;' src='"+noot+"'>";
				}
			}
		}
	}
}
</script>

<script type="text/javascript">
function maak_start(){
	aantal = document.m_form.m_lengte.value;
	var temp = new Array();
	temp = aantal.split('');
	alerto=2;
	for(i=0;i<temp.length;i++){
		if(alerto!=1){
			a=0;
			alert('test');
			if(temp[i] == 0 || temp[i] == 1 || temp[i] == 2 || temp[i] == 3 || temp[i] == 4 || temp[i] == 5 || temp[i] == 6 || temp[i] == 7 || temp[i] == 8 || temp[i] == 9){a=1;}
			if(a!=0){
				alerto = 1;
			}
			if(i==temp.length-1 && alerto != 1){
				for(j=0;j<aantal;j++){
					noot = (Math.round(Math.random()*4+1))+".gif";
					document.getElementById("muziek").innerHTML+="<img style='border:1px solid #000000; width:20px; height:100px;' src='"+noot+"'>";
				}
			}
		}
	}
}
</script>