fx= (navigator.appName.substring(0,1) == 'N');
ie= (navigator.appName.substring(0,1) == 'M');

function resize(x,y,width,height){
	var obj;
	var left,top;
	var vAux;
	
	if (document.getElementById("UI_Page") != 'undefined'){
		obj = document.getElementById("UI_Page");
		
		vAux = String(obj.style.left).split('px');
		if (vAux.length > 1){
			left = vAux[0];
		}else{
			left = (getDocumentWidth()*0.5)-x;
		}

		vAux = String(obj.style.top).split('px');
		if (vAux.length > 1){
			top = vAux[0];
		}else{
			top = (getDocumentHeight()*0.5)-y;
		}		
		
		if (left < 0) {
			obj.style.left = x + 'px';		
		}else{
			if (((Number(left)-Number(x)) == 0) && (Number(getDocumentWidth()) > Number(width))){
				obj.style.left = '50%';
			}
		}
		
		if (top < 0) {
			obj.style.top = y + 'px';
		}else{
			if (((Number(top)-Number(y)) == 0) && (getDocumentHeight() > height)){
				obj.style.top = '50%';
			}
		}
	}
}

function getDocumentWidth(){
	if (fx){
		return window.innerWidth
	}else{
		if (ie){
			return document.body.clientWidth
		}
	}
}

function getDocumentHeight(){
	if (fx){
		return window.innerHeight
	}else{
		if (ie){
			return document.body.clientHeight
		}
	}
}

function checkRegisteredScript(name){
	for (i=0;i<=document.getElementsByTagName('script').length-1; i++){					
		if (Number(String(document.getElementsByTagName('script')[i].src).indexOf(name)) > -1){						
			return true;					
		}
	}
	return false;
}