function MM_swapImgRestore() { //v3.0
	var i,x,a = document.MM_sr;
	for(i=0; a && i < a.length && (x=a[i]) && x.oSrc; i++) {
		x.src=x.oSrc;
	}
}

function MM_preloadImages() { //v3.0
	var d=document;
	if(d.images) {
		if(!d.MM_p) {
			d.MM_p=new Array();
		}
		var i,j=d.MM_p.length,a=MM_preloadImages.arguments;
		for(i=0; i<a.length; i++)  {
			if(a[i].indexOf("#")!=0) {
				d.MM_p[j]=new Image; d.MM_p[j++].src=a[i];
			}
		}
	}
}

function MM_findObj(n, d) { //v4.01
	var p,i,x;
	if(!d) {
		d=document;
		if((p=n.indexOf("?"))>0&&parent.frames.length) {
			d=parent.frames[n.substring(p+1)].document;
			n=n.substring(0,p);
		}
	}
	if(!(x=d[n])&&d.all) {
		x=d.all[n];
		for (i=0;!x&&i<d.forms.length;i++) {
			x=d.forms[i][n];
		}
	}
	for(i=0;!x&&d.layers&&i<d.layers.length;i++) {
		x=MM_findObj(n,d.layers[i].document);
	}
	if(!x && d.getElementById) {
		x=d.getElementById(n);
		return x;
	}
}

function MM_swapImage() { //v3.0
	var i,j=0,x,a=MM_swapImage.arguments;
	document.MM_sr=new Array;
	for(i=0;i<(a.length-2);i+=3) {
		if((x=MM_findObj(a[i]))!=null) {
			document.MM_sr[j++]=x;
			if(!x.oSrc) {
				x.oSrc=x.src; x.src=a[i+2];
			}
		}
	}
}



// This function will show an element based on the id you pass in
function showobj(objid) {
	var obj = document.getElementById(objid);
	obj.style.display = "block";
}

// This function will hide an element based on the id you pass in
function hideobj(objid) {
	var obj = document.getElementById(objid);
	obj.style.display = "none";
}


// This function will check to see if the value of a form is equal to the condition you supplied
// If it is, it will show the objid you passed in, otherwise it will hide the element
function getSelectedValue(value,condition,objid) {
	if(value == condition) {
		showobj(objid);
	}
	else {
		hideobj(objid);
	}
}


// This function will ask for delete confirmation of item id
// If they confirm it will send them to url, where if they have the correct permissions, the item will be deleted
function deletefromdb(id,url) {
	input_box=confirm("Are you sure you want to delete this?");
	
	if(input_box) {
		str1 = url.concat("task=delete&id=");
		str2 = str1.concat(id);
		window.location = str2;
	}
}

// This function sets the max length for the textarea object
function ismaxlength(obj) {
	var mlength=obj.getAttribute? parseInt(obj.getAttribute("maxlength")) : ""
	if (obj.getAttribute && obj.value.length>mlength)
	obj.value=obj.value.substring(0,mlength)
}

function checkext(upload_field, formats, alertText) {
	if(formats == undefined) {
		// Not sure why, but this only works with the | at the beginning and end
		formats = "|\.jpeg|\.jpg|\.gif|\.png|";
	}
	if(alertText == undefined) {
		alertText = "Please select a JPEG, GIF or PNG file.";
	}
	
	// this is just an example of checking
	// image file extension - jpg/jpeg
	var re_text = "/" + formats + "/i";
	//alert(re_text);
	var filename = upload_field.value;
	/* Checking file type */
	if(filename.search(re_text) == -1) {
		alert(alertText);
		upload_field.value = '';
	}
	return true;
}

function remove(url, id, alertText) {
	if(alertText == undefined) {
		alertText = "Are you sure you want to remove this?";
	}
	
	input_box=confirm(alertText);
	
	if(input_box) {
		str1 = url.concat("task=remove&id=");
		str2 = str1.concat(id);
		window.location = str2;
	}
}

function confirm_action(url, action, id, alertText) {
	if(alertText == undefined) {
		alertText = "Are you sure you want to remove this?";
	}
	
	input_box=confirm(alertText);
	
	if(input_box) {
		str1 = url.concat("task=");
		str2 = str1.concat(action);
		str3 = str2.concat("&id=");
		str4 = str3.concat(id);
		window.location = str4;
	}
}

// This function will send a value from the child window to it's parent
function sendValue(fieldObjId, sendValue, closeWin) {
	fieldObj = window.opener.document.getElementById(fieldObjId);
	fieldObj.value = sendValue;
	if(closeWin == undefined || closeWin == true) {
		window.close();
	}
}

// This function will open the specified url in a new window
function popup(winLink, winName, winWidth, winHeight, winResize, winScroll, winMenu) {
	if(winWidth == undefined || winWidth == NaN) {
		winWidth = 400;
	}
	if(winHeight == undefined || winHeight == NaN) {
		winHeight = 400;
	}
	if(winResize == undefined || (winResize != "yes" && winResize != "no" && winResize.constructor != Boolean)) {
		winResize = "yes";
	}
	if(winScroll == undefined || (winScroll != "yes" && winScroll != "no" && winScroll.constructor != Boolean)) {
		winScroll = "yes";
	}
	if(winMenu == undefined || (winMenu != "yes" && winMenu != "no" && winMenu.constructor != Boolean)) {
		winMenu = "no";
	}
	if(!window.focus) {
		return true;
	}
	var winURL;
	if(typeof(winLink) == 'string') {
		winURL=winLink;
	}
	else {
		winURL=winLink.href;
	}
	var winStyle;
	winStyle = 'width=' + winWidth + ',height=' + winHeight + ',scrollbars=' + winScroll + ',menubar=' + winMenu + ',location=' + winMenu + ',toolbar=' + winMenu + ',resizeable=' + winResize;
	window.open(winURL, winName, winStyle);
	
	return false;
}