// JavaScript Document
function openWin(what){
	nwin=window.open(what,"myParent","toolbar=no,location=no,resizable=no, scrollbars=no, width=400,height=400,left=100,top=100, ")
}

function openInParent(what){
	opener.location.href = what;
}

function showHideLearn(){

	var style=document.getElementById("learnLayer").style;
	if(style.visibility=="visible"){
		style.visibility = "hidden";	
	}else{
		style.visibility = "visible";
		
	}
	
}

		/////////////////////FOR CSS POPUPS/////////////////
		///////////////////////////////////////////////

function csstoggle(div_id) {
	var el = document.getElementById(div_id);
	if ( el.style.display == 'none' ) {	el.style.display = 'block';}
	else {el.style.display = 'none';}
}

function csswindow_pos(popUpDivVar) {
	if (typeof window.innerWidth != 'undefined') {
		viewportwidth = window.innerHeight;
	} else {
		viewportwidth = document.documentElement.clientHeight;
	}
	if ((viewportwidth > document.body.parentNode.scrollWidth) && (viewportwidth > document.body.parentNode.clientWidth)) {
		window_width = viewportwidth;
	} else {
		if (document.body.parentNode.clientWidth > document.body.parentNode.scrollWidth) {
			window_width = document.body.parentNode.clientWidth;
		} else {
			window_width = document.body.parentNode.scrollWidth;
		}
	}
	var popUpDiv = document.getElementById(popUpDivVar);
	window_width=920/2-260;
	//window_width=window_width/2-260;
	//260 is half popup's width
	popUpDiv.style.left = window_width + 'px';
}
function csspopup(windowname) {
	csswindow_pos(windowname);
	csstoggle(windowname);		
}