var c = new Object();
c["50"] = new Array("14","30");
c["100"] = new Array("14","30");
c["200"] = new Array("14","30");
c["300"] = new Array("30");
c["400"] = new Array("30");
c["500"] = new Array("90");
c["600"] = new Array("90");
c["s700"] = new Array("90");
c["800"] = new Array("90");
c["900"] = new Array("90");
c["1000"] = new Array("90");

function ge(v) {
	return document.getElementById(v);
}

function validate() {
	var a = ge("amount").value;	
	var t = ge("loantime");
	if ( c[a]!=undefined && c[a].constructor == Array ) {
		t.options.length = 0;	
		for(var i=0;i<c[a].length;i++ ) {
			t.options.add(new Option(c[a][i],c[a][i]));
		}
	} else {
		alert("Virhe....");
	}	
}