function radioChange() {
        if(document.form.bandpos[0].checked == true) {
            document.form.bandstart.disabled = false;
            document.form.bandend.disabled = false;
            chromSelected(document.form.chromosome.value);
            
            if (document.form.selectedbandstart.value > 0) {
            	document.form.bandstart.options[document.form.selectedbandstart.value].selected = true;
//alert("recovered : " + document.form.selectedbandstart.value);
            }
            if (document.form.selectedbandend.value > 0) {
            	document.form.bandend.options[document.form.selectedbandend.value].selected = true;
//alert("recovered : " + document.form.selectedbandend.value);
            }
            
            document.form.bandstart.style.backgroundColor='#FFFFFF';
		    document.form.bandend.style.backgroundColor='#FFFFFF';
		    document.form.posstart.disabled = true;
		    document.form.posend.disabled = true;
		    document.form.posstart.style.backgroundColor='#D4D0C8';
		    document.form.posend.style.backgroundColor='#D4D0C8';
    	} else if(document.form.bandpos[1].checked == true) {
      		document.form.bandstart.disabled = true;
		    document.form.bandend.disabled = true;
		    document.form.bandstart.style.backgroundColor='#D4D0C8';
		    document.form.bandend.style.backgroundColor='#D4D0C8';
		    document.form.posstart.disabled = false;
		    document.form.posend.disabled = false;
		    document.form.posstart.style.backgroundColor='#FFFFFF';
		    document.form.posend.style.backgroundColor='#FFFFFF';
    	} else {
	      	document.form.bandstart.disabled = false;
	        document.form.bandend.disabled = false;
	        document.form.bandstart.style.backgroundColor='#FFFFFF';
	        document.form.bandend.style.backgroundColor='#FFFFFF';
	        document.form.posstart.disabled = true;
	        document.form.posend.disabled = true;
	        document.form.posstart.style.backgroundColor='#D4D0C8';
	        document.form.posend.style.backgroundColor='#D4D0C8';
        }
    }
	
	function chromNotSelected(){
		document.form.Band.disabled = true;
	    document.form.Position.disabled = true;
	    document.form.bandstart.disabled = true;
        document.form.bandend.disabled = true;
        document.form.bandstart.style.backgroundColor='#D4D0C8';
        document.form.bandend.style.backgroundColor='#D4D0C8';
	    document.form.posstart.disabled = true;
        document.form.posend.disabled = true;
        document.form.posstart.style.backgroundColor='#D4D0C8';
        document.form.posend.style.backgroundColor='#D4D0C8';
	}
	
	function chromChanged() {
		if(document.form.chromosome.selectedIndex==0){
		    chromNotSelected();
		}
		else{
			if(document.form.bandpos[0].checked == false && document.form.bandpos[1].checked == false){
				document.form.bandpos[0].checked = true;
			}
	    	document.form.Band.disabled = false;
	    	document.form.Position.disabled = false;
	    	radioChange();
		}
	}
	function saveBandpos() {
//alert("saveBandpos()");
		if (document.form.bandpos[0].checked == true) {
			document.form.selectedbandstart.value = document.form.bandstart.selectedIndex;
			document.form.selectedbandend.value = document.form.bandend.selectedIndex;
//alert("saved : " + document.form.selectedbandstart.value + "-" + document.form.selectedbandend.value);
		}
	}