win_num = 0;
ua = navigator.userAgent;
win_msie = ((ua.indexOf("Win") >= 0) && (ua.indexOf("MSIE") >= 0))
function new_win(win_url,win_name) {

// optional 3rd param = max_width
// optional 4th param = max_height

	// if no window name is given, craete one to ensure a new window opens
	if (win_name == '' || win_name == '_new') {
		win_nm = 'new_win_' + win_num;
		win_num = win_num + 1;
	} else {
		win_nm = win_name;
	}

	//if (win_msie) {
	//	win_nm = win_name + win_num;
	//	win_num = win_num + 1;
	//} else { win_nm = win_name; }

	if (arguments.length >= 3) { max_width=arguments[2]; } else { max_width=600; }
	if (arguments.length >= 4) { max_height=arguments[3]; } else { max_height=450; }
	// alert(max_width);
	// alert(max_height);
	
	left1 = Math.round(screen.availWidth * 0.085);
	top1 = 30;
	w1 = Math.round(screen.availWidth*0.85);
	h1 = Math.round(screen.availHeight*0.85);
	// Math.round((screen.availHeight-200));
	if ((max_width > 0) && (w1 > max_width)) {
		dif1 = w1-max_width;
		left1 = Math.round(left1+(dif1/2));
		w1 = max_width; }
	if ((max_height > 0) && (h1 > max_height)) {
		dif1 = h1-max_height;
		top1 = Math.round(top1+(dif1/2));
		h1 = max_height; }
	win_attr = 'resizable=yes,scrollbars'; // toolbar,menubar
	//win_features = win_attr;
	if (win_attr != '') { win_features = win_attr + ','; } else { win_features = '' }
	if (win_attr.indexOf("left=") < 0) {win_features = win_features+'left='+left1}
	if (win_attr.indexOf("top=") < 0) {win_features = win_features+',top='+top1}
	if (win_attr.indexOf("screenX=") < 0) {win_features = win_features+',screenX='+left1}
	if (win_attr.indexOf("screenY=") < 0) {win_features = win_features+',screenY='+top1}
	if (win_attr.indexOf("width=") < 0) {win_features = win_features+',width='+w1}
	if (win_attr.indexOf("height=") < 0) {win_features = win_features+',height='+h1}
	win = window.open(win_url, win_nm, win_features);
	win.focus();
}



/* win_num = 0;
ua = navigator.userAgent;
win_msie = ((ua.indexOf("Win") >= 0) && (ua.indexOf("MSIE") >= 0))
mac_msie = ((ua.indexOf("Mac") >= 0) && (ua.indexOf("MSIE") >= 0))


function new_win(win_url,win_name, win_attr) {
	win = window.open(win_url, win_name, win_attr);
	win.focus();
	return win;
}
*/

// mac ie 4.5 ignores top/left

function new_win2(win_url,win_name, win_attr, win_size, max_width, max_height) {
	if (win_size==1) {
		left1 = Math.round(screen.availWidth * 0.075);
		top1 = 40;
		// Math.round(screen.availHeight * 0.05);
		w1 = Math.round(screen.availWidth*0.85);
		h1 = Math.round((screen.availHeight-200));
		//availŠ150 = good for 1280x1024
		// 5-22-02 this was "availHeight*0.87" - this was too tall on win ie 1024x768 and reduced
		// 87% for no toolbar etc
		if ((max_width > 0) && (w1 > max_width)) {
			dif1 = w1-max_width;
			left1 = Math.round(left1+(dif1/2));
			w1 = max_width; }
		if ((max_height > 0) && (h1 > max_height)) {
			dif1 = h1-max_height;
			top1 = Math.round(top1+(dif1/2));
			h1 = max_height; }
		if (win_attr != '') { win_features = win_attr + ','; } else { win_features = '' }
		if (win_attr.indexOf("left=") < 0) {win_features = win_features+'left='+left1}
		if (win_attr.indexOf("top=") < 0) {win_features = win_features+',top='+top1}
		if (win_attr.indexOf("screenX=") < 0) {win_features = win_features+',screenX='+left1}
		if (win_attr.indexOf("screenY=") < 0) {win_features = win_features+',screenY='+top1}
		if (win_attr.indexOf("width=") < 0) {win_features = win_features+',width='+w1}
		if (win_attr.indexOf("height=") < 0) {win_features = win_features+',height='+h1}
	} else {
		win_features = win_attr;
	}
	// alert('win_features = '+win_features);
	win = window.open(win_url, win_name, win_features);
	win.focus();
	return win;
}


// define constants for window sizing (win_sizing parameter)

// don't define window size (ie, use win_attr)
var WIN_NONE = 0; 

// open full screen
var WIN_FULL = 1;

// open slightly smaller than full screen
var WIN_BIG = 2;

// open slightly smaller than full screen, but crop down to specified width and/or height (-1 values will be ignored)
var WIN_BIG_CROP = 3;

// open to target size, unless this would go offscreen
var WIN_TARGET = 4;

// win_type:
var WIN_DEFAULT = 1;	// usual complement
var WIN_BARE = 2;	// auto scrollbars, no other features

// win_name
var WIN_NEW = 'open_win_new_window';

// NOTES:
// for some reason, referring to these constants in the function below causes errors and crashes in win netscape 4.x

function open_win(win_url, win_name, win_type, win_sizing, target_width, target_height, win_attr) {
	var h1,w1,top1,left1, win_attr;
	if (win_name == 'open_win_new_window') { // WIN_NEW
		win_name = '_new';
	}
	debug_flag = false;
	//alert(screen.availWidth);
	//alert(screen.availHeight);
	if (debug_flag) { alert("win_sizing = "+win_sizing); }

	// we won't necessarily use this... but figure out size for WIN_BIG
	left1 = Math.round(screen.availWidth * 0.075);
	top1 = 10;
	w1 = Math.round(screen.availWidth*0.85);
	if (win_type == 2) { // WIN_BARE
		vert_extra = 50; }
	else {
		vert_extra = 210;
	}
	h1 = Math.round((screen.availHeight-vert_extra));
	//availŠ150 = good for 1280x1024
	// 5-22-02 this was "availHeight*0.87" - this was too tall on win ie 1024x768 and reduced
	// 87% for no toolbar etc

	// figure out win_features based on size parameters
	switch (win_sizing) {
	case 0: // WIN_NONE
		win_features = win_attr;
		break;
	case 1: // WIN_BIG
		if (win_attr != '') { win_features = win_attr + ','; } else { win_features = '' }
		if (win_attr.indexOf("left=") < 0) {win_features = win_features+'left='+left1}
		if (win_attr.indexOf("top=") < 0) {win_features = win_features+',top='+top1}
		if (win_attr.indexOf("screenX=") < 0) {win_features = win_features+',screenX='+left1}
		if (win_attr.indexOf("screenY=") < 0) {win_features = win_features+',screenY='+top1}
		if (win_attr.indexOf("width=") < 0) {win_features = win_features+',width='+w1}
		if (win_attr.indexOf("height=") < 0) {win_features = win_features+',height='+h1}
		break;
	case 3: // WIN_BIG_CROP
	default:
		if ((target_width > 0) && (w1 > target_width)) {
			if (debug_flag) { alert("cropping to target_width: "+target_width); }
			dif1 = w1-target_width;
			left1 = Math.round(left1+(dif1/2));
			w1 = target_width; }
		if ((target_height > 0) && (h1 > target_height)) {
			if (debug_flag) { alert("cropping to target_height: "+target_height); }
			dif1 = h1-target_height;
			top1 = Math.round(top1+(dif1/2));
			h1 = target_height; }
		if (win_attr != '') { win_features = win_attr + ','; } else { win_features = '' }
		if (win_attr.indexOf("left=") < 0) {win_features = win_features+'left='+left1}
		if (win_attr.indexOf("top=") < 0) {win_features = win_features+',top='+top1}
		if (win_attr.indexOf("screenX=") < 0) {win_features = win_features+',screenX='+left1}
		if (win_attr.indexOf("screenY=") < 0) {win_features = win_features+',screenY='+top1}
		if (win_attr.indexOf("width=") < 0) {win_features = win_features+',width='+w1}
		if (win_attr.indexOf("height=") < 0) {win_features = win_features+',height='+h1}
		break;
	case 4: // WIN_TARGET
		whitespace_x = 15;
		whitespace_y = 35;
		availWidth = screen.availWidth - whitespace_x;
		availHeight = screen.availHeight - whitespace_y;
		// assume two target values exist
		if ((target_width > availWidth)) {
			// need to reduce this dimension to keep on screen
			left1 = 0; //Math.round(whitespace_x/2);
			w1 = availWidth;
		} else {
			// center with extra space
			left1 = Math.round((availWidth - target_width)/2);
			w1 = target_width;
		}
		if ((target_height > availHeight)) {
			// need to reduce this dimension to keep on screen
			top1 = 0; //Math.round(whitespace_y/2);
			h1 = availHeight;
		} else {
			// center with extra space
			top1 = Math.round((availHeight - target_height)/2);
			h1 = target_height;
		}
		if (win_attr != '') { win_features = win_attr + ','; } else { win_features = '' }
		if (win_attr.indexOf("left=") < 0) {win_features = win_features+'left='+left1}
		if (win_attr.indexOf("top=") < 0) {win_features = win_features+',top='+top1}
		if (win_attr.indexOf("screenX=") < 0) {win_features = win_features+',screenX='+left1}
		if (win_attr.indexOf("screenY=") < 0) {win_features = win_features+',screenY='+top1}
		if (win_attr.indexOf("width=") < 0) {win_features = win_features+',width='+w1}
		if (win_attr.indexOf("height=") < 0) {win_features = win_features+',height='+h1}
		break;
	}
	if (debug_flag) { alert("win_type = "+win_type); }
	switch (win_type) {
	case 1: // WIN_DEFAULT
		type_features = 'menubar=yes,toolbar=yes,location=yes,status=yes,resizable=yes,scrollbars=yes';
		break;
	case 2: // WIN_BARE
	default:
		type_features = 'menubar=no,toolbar=no,location=no,status=no,resizable=yes,scrollbars=yes';
		break;
	}
	if (debug_flag) { alert("win_features = "+win_features); }
	if (win_features != '') { win_features = win_features + ',' + type_features; } else { win_features = type_features; }
	// alert('win_features = '+win_features);
	win = window.open(win_url, win_name, win_features);
	win.focus();
	return win;
}

function agelink_popup(win_url, target_width, target_height) {
	open_win(win_url,WIN_NEW,WIN_BARE,WIN_TARGET,target_width,target_height,'');
	return false;
}