function cp(event){
	if ( event ) {
		if ( document.all ) window.event.cancelBubble=true;
		else event.stopPropagation();
	}
}

function addScrollPosition(link) {
	var windowScrollPositions = getWindowScrollPositions();
	
	link.href +=
		(link.href.search(/\?/) > 0?'&':'?')
		+ 'pc3Scroll='
		+ windowScrollPositions['left']
		+ 'x'
		+ windowScrollPositions['top']
	;
}

function applyScrollPosition(){
	var key;
	var match = document.location.search.match('pc3Scroll=([0-9]+)x([0-9]+)');
	if ( !match ) return;
	
	setWindowScrollPositions(match[1], match[2]);
}

/**
 * 20080822.acn : set the scrollposition of the window
 * 
 * @param {int} left position from left of the top-left corner of the window
 * @param {int} top position from top of the top-left corner of the window
 */
function setWindowScrollPositions(left, top) {
	if ( typeof window.pageXOffset != 'undefined' && typeof window.pageYOffset != 'undefined' ) {
		window.scrollTo(left, top);
	}
	else if ( typeof document.compatMode != 'undefined' && document.compatMode != 'BackCompat' ) {
		document.documentElement.scrollLeft = left;
		document.documentElement.scrollTop = top;
	}
	else if ( typeof document.body != 'undefined' ) {
		document.body.scrollLeft = left;
		document.body.scrollTop = top;
	}
}

/**
 * 20080822.acn : get the scrollposition of the window
 * 
 * @return {array} windowScrollPositions['left'] and windowScrollPositions['top']
 */
function getWindowScrollPositions() {
	var windowScrollPositions = new Array();
		windowScrollPositions['left'] = 0;
		windowScrollPositions['top']  = 0;
	
	if (  typeof window.pageXOffset != 'undefined' && typeof window.pageYOffset != 'undefined' ) {
		windowScrollPositions['left'] = window.pageXOffset;
		windowScrollPositions['top'] = window.pageYOffset;
	}
	else if ( typeof document.compatMode != 'undefined' && document.compatMode != 'BackCompat' ) {
		windowScrollPositions['left'] = document.documentElement.scrollLeft;
		windowScrollPositions['top'] = document.documentElement.scrollTop;
	}
	else if ( typeof document.body != 'undefined' ) {
		windowScrollPositions['left'] = document.body.scrollLeft;
		windowScrollPositions['top'] = document.body.scrollTop;
	}
	
	return windowScrollPositions;
}