// Noud van den Broek
// IDEAX B.V.
// 23 august 2002
//
//
// function open FoldersOnLoad
// changes the image of the open folders to the open folder image
//
function openFoldersOnLoad() {
	if (location.href.search(/&ExpandView/) !=-1) {
		// open all folders if url contains &ExpandView
		if (document.images) {
			for(i=0;i<document.images.length;i++) {
				if (document.images[i].name.indexOf("category") != -1) {
					if (document.images[i].src.indexOf("/icons/folder.gif") != -1) {
						document.images[i].src = "/icons/foldero.gif"
					} else {
						if (document.images[i].src.indexOf("/Expand.gif") != -1) {
							document.images[i].src = "./Collapse.gif"
						}
					}
				}
			}
		} 
	} else {
		// open the selected folder if url contains &Expand= and also the higher levels
		varExpand = location.href.match(/&Expand=[0-9.]*/g);
		if (varExpand != null) {
			varExpandNumberArray = varExpand[0].replace(/&Expand=/g, "").split(".");
			for (x in varExpandNumberArray) {
				if (x == 0) {
					varExpandNumber = varExpandNumberArray[x];
				} else {
					varExpandNumber = varExpandNumber + "." + varExpandNumberArray[x];
				}
				if (this.document["category"+varExpandNumber] != undefined) {					
					if (this.document["category"+varExpandNumber].src.indexOf("/icons/folder.gif") != -1) {
						this.document["category"+varExpandNumber].src = "/icons/foldero.gif";
					} else {
						if (this.document["category"+varExpandNumber].src.indexOf("/Expand.gif") != -1) {
							this.document["category"+varExpandNumber].src = "./Collapse.gif";
						}
					}
				}
			}		
		} else {
			// open only the higher levels if url contains &Collapse=
			varCollapse = location.href.match(/&Collapse=[0-9.]*/g);
			if (varCollapse != null) {
				varCollapseNumberArray = varCollapse[0].replace(/&Collapse=/g, "").split(".");
				for (x in varCollapseNumberArray) {
					if (x != varCollapseNumberArray.length-1) {
						if (x == 0) {
							varCollapseNumber = varCollapseNumberArray[x];
						} else {
							varCollapseNumber = varCollapseNumber + "." + varCollapseNumberArray[x];
						}
						if (this.document["category"+varCollapseNumber] != undefined) {
							if (this.document["category"+varCollapseNumber].src.indexOf("/icons/folder.gif") != -1) {
								this.document["category"+varCollapseNumber].src = "/icons/foldero.gif";
							} else {
								if (this.document["category"+varCollapseNumber].src.indexOf("/Expand.gif") != -1) {
									this.document["category"+varCollapseNumber].src = "./Collapse.gif";
								}
							}
						}
					}
				}
			}
		}
	}
}
//
// function ReplaceURL
// removes all expand and collapse information from an URL
//
function ReplaceURL(addArg) { 
	var newlocation = location.href
	newlocation = newlocation.replace(/&CollapseView/g,"") 
	newlocation = newlocation.replace(/&ExpandView/g,"") 
	newlocation = newlocation.replace(/&Expand=[0-9.]*/g,"")
	newlocation = newlocation.replace(/&Collapse=[0-9.]*/g,"")	
	newlocation = newlocation.replace(/#[0-9.]*/g,"")	
	location = newlocation + addArg
}
//
// function ExpandCollapse
// Expands or Collapses the selected category
//
function ExpandCollapse(startNumber, docNumber) { 
	var newlocation = location.href
	newlocation = newlocation.replace(/&CollapseView/g,"") 
	newlocation = newlocation.replace(/&ExpandView/g,"") 
	newlocation = newlocation.replace(/&Expand=[0-9.]*/g,"")
	newlocation = newlocation.replace(/&Collapse=[0-9.]*/g,"")
	newlocation = newlocation.replace(/&Start=[0-9.]*/g,"")
	newlocation = newlocation.replace(/&Startkey=[^&]*/g,"")	
	newlocation = newlocation.replace(/#[0-9.]*/g,"")	
	
	if (this.document["category"+startNumber] == undefined) {
		startNumber = docNumber;
	}
	if (location.href.search(/&ExpandView/) !=-1) {
		// collapse the category if the URL contains &ExpandView
		location = newlocation + "&Start=" + startNumber + "&Collapse=" + docNumber		
	} else {
		if (location.href.search(/&CollapseView/) !=-1) {
			// expand the category if the URL contains &CollapseView
			location = newlocation + "&Start=" + startNumber + "&Expand=" + docNumber
		} else {
			// collapse the category if the URL contains &Expand= and the selected category is the open one or a parent of the selected one
			varExpand = location.href.match(/&Expand=[0-9.]*/g);
			if (varExpand != null) {
				varExpandNumberArray = varExpand[0].replace(/&Expand=/g, "").split(".");
				varMatch = false;
				for (x in varExpandNumberArray) {
					if (x == 0) {
						varExpandNumber = varExpandNumberArray[x];
					} else {
						varExpandNumber = varExpandNumber + "." + varExpandNumberArray[x];
					}
					if (varExpandNumber == docNumber) {
						location = newlocation + "&Start=" + startNumber + "&Collapse=" + docNumber;
						varMatch = true;
					}
				}
				if (!varMatch) {
					location = newlocation + "&Start=" + startNumber + "&Expand=" + docNumber	
				}
			} else {
				// collapse the category if the URL contains &Collapse= and the selected category a parent of the selected one
				varCollapse = location.href.match(/&Collapse=[0-9.]*/g);
				if (varCollapse != null) {
					varCollapseNumberArray = varCollapse[0].replace(/&Collapse=/g, "").split(".");
					varMatch = false;
					for (x in varCollapseNumberArray) {
						if (x != varCollapseNumberArray.length-1) {
							if (x == 0) {
								varCollapseNumber = varCollapseNumberArray[x];
							} else {
								varCollapseNumber = varCollapseNumber + "." + varCollapseNumberArray[x];
							}					
							if (varCollapseNumber == docNumber) {
								location = newlocation + "&Start=" + startNumber + "&Collapse=" + docNumber;
								varMatch = true;
							}
						}
					}
					if (!varMatch) {
						location = newlocation + "&Start=" + startNumber + "&Expand=" + docNumber	
					}
				} else {
					// in all other cases expand the selected one
					location = newlocation + "&Start=" + startNumber + "&Expand=" + docNumber
				}
			}
		}
	}	
}