/** 
 * Document
 * 
 */

/** 
 * 
 */
document.extend = function(destination, source) {
	for (property in source) 
		destination[property] = source[property];
	return destination;
};

/** 
 * 
 */
document.getElement = function (name){return document.getElementById ? document.getElementById(name) : document.all ? document.all(name) : null;};
document.getObject = document.getElement;

/** 
 * 
 */
var $ = function (element){
	if (typeof element == 'string') 
		return document.getElement(element);
	else if (typeof element == 'object') 
		return element;
	else 
		return null;
};

/** 
 * 
 */
var Try = {
  these: function() {
    var returnValue;
    for (var i = 0, length = arguments.length; i < length; i++) {
      var lambda = arguments[i];
      try {
        returnValue = lambda();
        break;
      } catch (e) {}
    };
    return returnValue;
  }
};

/** 
 * 
 */
document.getDocumentElement = function () {
	return this.documentElement;
};

/** 
 * 
 */
document.selectDropMenuByVal = function(dropmenu,value){ 
	if( typeof(dropmenu) == 'object' ) 
		dropObject = dropmenu;
	else 
		dropObject = document.getElement(dropmenu);
	try{
		dropLength = dropObject.options.length;	
	}catch(e){
		alert('selectDropMenuByVal:\ninvalid target control \'' + dropmenu + '\'');
		return;
	}
	for( counter = 0; counter < dropLength;  ++counter ){
		if(dropObject.options[counter].value == value){ 
			dropObject.selectedIndex = counter;
			return;
		}
	}
};

/** 
 * 
 */
document.resizeToContent = function(move) {
	pSize = document.getPageSize();
	window.resizeBy(pSize[0]-pSize[2], pSize[1]-pSize[3]); 
	if(move!==undefined){
		x = parseInt(screen.width / 2.0) - (pSize[0] / 2.0);
		y = parseInt(screen.height / 2.0) - (pSize[1] / 2.0);
		window.moveTo(x, y);
	}
};

/** 
 * 
 */
document.getPageSize = function() {
	
	var xScroll, yScroll;
	
	if (window.innerHeight && window.scrollMaxY) {	
		xScroll = document.body.scrollWidth;
		yScroll = window.innerHeight + window.scrollMaxY;
	} else if (document.body.scrollHeight > document.body.offsetHeight){ // all but Explorer Mac
		xScroll = document.body.scrollWidth;
		yScroll = document.body.scrollHeight;
	} else { // Explorer Mac...would also work in Explorer 6 Strict, Mozilla and Safari
		xScroll = document.body.offsetWidth;
		yScroll = document.body.offsetHeight;
	}
	
	var windowWidth, windowHeight;
	if (self.innerHeight) {	// all except Explorer
		windowWidth = self.innerWidth;
		windowHeight = self.innerHeight;
	} else if (document.documentElement && document.documentElement.clientHeight) { // Explorer 6 Strict Mode
		windowWidth = document.documentElement.clientWidth;
		windowHeight = document.documentElement.clientHeight;
	} else if (document.body) { // other Explorers
		windowWidth = document.body.clientWidth;
		windowHeight = document.body.clientHeight;
	}	
	
	// for small pages with total height less then height of the viewport
	if(yScroll < windowHeight){
		pageHeight = windowHeight;
	} else { 
		pageHeight = yScroll;
	}

	// for small pages with total width less then width of the viewport
	if(xScroll < windowWidth){	
		pageWidth = windowWidth;
	} else {
		pageWidth = xScroll;
	}
	
	arrayPageSize = new Array(pageWidth,pageHeight,windowWidth,windowHeight) ;
	
	return arrayPageSize;
	
};