function selectAllCheckboxes(name)
{
	selectAllCheckboxesInternal(name,true);
}
function unselectAllCheckboxes(name)
{
	selectAllCheckboxesInternal(name,false);
}
function selectAllCheckboxesInternal(name,checked)
{
	els=document.getElementsByTagName("input");
	for(var i=0;i<els.length;i++)
	{
		if(els[i].type=="checkbox"){
			if(els[i].name.indexOf(name)==0)
				els[i].checked=checked;
		}
	}
}
function getInternetExplorerVersion()
	//Returns the version of Internet Explorer or a -1
	//(indicating the use of another browser).
	{
	var rv = -1; // Return value assumes failure.
	if (navigator.appName == 'Microsoft Internet Explorer')
	{
	 var ua = navigator.userAgent;
	 var re  = new RegExp("MSIE ([0-9]{1,}[\.0-9]{0,})");
	 if (re.exec(ua) != null)
	   rv = parseFloat( RegExp.$1 );
	}
	return rv;
}
var popupwindow;
function closePopUp(){
	if(popupwindow!=null)popupwindow.close();
}
function getParentNode(el,nodename)
{
	while(el.parentNode.nodeName.toLowerCase()!=nodename){
		if(el.parentNode==null)return null;
		el=el.parentNode;
	}
	return el.parentNode;
}
function setNodeVisible(el,visible,display)
{
	if(visible){
		el.style.display="none";
	}else el.style.display=display;
}
var dynar=null;
function setDynReqValue(id,def,el,shown)
{
	if(dynar==null){
		dynar=new Object();
	}
	if(dynar[id]==null)dynar[id]=new Object();
	if(el.nodeName.toLowerCase()=="input"&&el.getAttribute("type")=="text")
	{
		name=el.getAttribute("name");
		if(!shown){
			if(typeof dynar[id][name]!= 'undefined')dynar[id][name]=el.value;
			else {
				if(el.value.length <=0)dynar[id][name]="";
				else dynar[id][name]=el.value;
			}
			el.value=def;
		}else {
			if(typeof dynar[id][name]!= 'undefined')el.value=dynar[id][name];
		}
	}
}