//W.Butcher, November 2006
//Download functions to handle the downloading of files

function chkunck() {

		var chked = false;
		
		if(document.getElementById('checkAll').checked){
			chked = true;
		}
		
		var checkBox = document.getElementsByName('checkBox[]')
		
		for (n=0; n <= checkBox.length -1; n++){
			checkBox[n].checked = chked;
		}
}

function chksubit(value) {

		var chked = false;
		var checkBox = document.getElementsByName('checkBox[]')
		var zipname = "";
		
		if (value != "all"){
			
			document.getElementById('checkAll').checked = false
			
			for (n=0; n <= checkBox.length -1; n++){
				if(document.getElementById('path').value + checkBox[n].value == value){
					checkBox[n].checked = true;
					chked = true;
					zipname = checkBox[n].value
				}else{
					checkBox[n].checked = false;
				}
			}
		}else{		
		
			zipname = "all";
			
			for (n=0; n <= checkBox.length -1; n++){
				if(checkBox[n].checked == true){
					chked = true;
				}
			}
		}
		
		var d = new Date();
	
		document.getElementById('zipname').value = zipname + "_" + d.getDate() + "-" + d.getMonth() + "-" + d.getFullYear();
		
		if(chked == true){
			document.getElementById('downloadsFm').submit();
		}else{
			alert("You must select at least one file to download");
			return false;
		}
		
}