var funcoesExiste = true;
var dc = document;
var xV1 = 0;	

function stayHome(){

	var nV = 0;
	oPai = null;
	oPai=(parent==undefined?document:parent.document);

	if (!oPai.body.scrollTop){nV = oPai.documentElement.scrollTop}
	else {nV = oPai.body.scrollTop}

	document.getElementById('msgBloqueio').style.top = xV1+nV+"px";		
	setTimeout("stayHome()",50);		
}

function init(){
	try {
		xV1 = document.getElementById('msgBloqueio').offsetTop;
	}
	catch(err) {
		xV1 = null;
	}
	//stayHome();
}

window.onload=init;

function BloqueiaPagina(bool){ 
	
	stayHome();
	dc.getElementById('bloqueio').style.display=bool?'block':'none'; 		
	dc.getElementById('msgBloqueio').style.display=bool?'block':'none'; 		
	
	totScrollY = getScrollXY()[1];	
	dc.getElementById('bloqueio').style.height =totScrollY + document.body.clientHeight;	
	
	if(bool){ 			 			
		msg = dc.getElementById('msgBloqueio'); 			
		stayHome();
	} 	
	
}

function getScrollXY() {
	var scrOfX = 0, scrOfY = 0;
	if( typeof( window.pageYOffset ) == 'number' ) {
		//Netscape compliant
		scrOfY = window.pageYOffset;
		scrOfX = window.pageXOffset;	
	} else{
		//IE6 standards compliant mode    
		scrOfY = screen.height - parent.document.documentElement.scrollHeight;    
		scrOfX = parent.document.documentElement.scrollLeft;
	}

	return [ scrOfX, scrOfY ];
}