<!--
function screen_height ()
{
	if (window.screen)
		return (screen.height);
	else if (navigator.javaEnabled ())
	{
		var toolkit = java.awt.Toolkit.getDefaultToolkit ();
		var screen_size = toolkit.getScreenSize ();
		return (screen_size.height);
	}
	return (0);
}

function screen_width ()
{
	if (window.screen)
	return (screen.width);
else if (navigator.javaEnabled ())
	{
		var toolkit = java.awt.Toolkit.getDefaultToolkit ();
		var screen_size = toolkit.getScreenSize ();
		return (screen_size.width);
	}
	return (0);
}

function popup(URL,width,height) {
	sheight = (((screen_height()-20)-height)/2);
	swidth = (screen_width() - width)/2;
	eval("page = window.open(URL, 'PopUp', 'scrollbars=1,toolbar=0,location=0,statusbar=0,menubar=0,resizable=0,width="+width+",height= "+height+",left = "+swidth+",top ="+sheight+"');");
	page.main = self;
	page.focus();
}


var arr_popups = [] ;
var isIE=(document.all)?true:false ;

function js_image(obj_target)
{
	// assigning methods
	this.popup=js_popup;
	this.setim=js_set_image;

	// validate input parameters
	if (!obj_target)
	{
		alert('Error calling the image popup: no target control specified');
		return null;
	}

	if (obj_target.value == null)
	{
		alert('Error calling the image popup: parameter specified is not valid target control');
		return null;
	}

	this.target = obj_target;
	
	// register in global collections
	this.id = arr_popups.length;
	arr_popups[this.id] = this;
}

function js_popup()
{
	var obj_popup=window.open('imageselector.php?id='+this.id,'ImagePopup','width=640,scrollbars=1,height=480,status=no,resizable=yes,top=200,left=200,dependent=yes,alwaysRaised=yes');
	obj_popup.opener = window;
	obj_popup.focus();
}

function js_set_image(imId)
{
	return(imId);
}
//-->