/*
Simple Image Trail script- By JavaScriptKit.com
Visit http://www.javascriptkit.com for this script and more
This notice must stay intact
*/ 

var w=1
var h=1

if (document.getElementById || document.all)
document.write('<div id="trailimageid" style="position:absolute;visibility:hidden;left:0px;top:-1000px;width:1px;height:1px;background:#DDDDDD;z-index:2;"><img id="ttimg" src="imagens/s.gif"></div>')

function gettrailobj()
{
	if (document.getElementById) return document.getElementById("trailimageid").style
	else if (document.all) return document.all.trailimagid.style
}

function truebody()
{
	return (!window.opera && document.compatMode && document.compatMode!="BackCompat")? document.documentElement : document.body
}

function hidetrail()
{
	document.onmousemove=""
	document.getElementById('ttimg').src='/imagens/s.gif'
	gettrailobj().visibility="hidden"
	gettrailobj().right=-1000
	gettrailobj().top=0
}


function showtrail(width,height,file)
{
	if(navigator.userAgent.toLowerCase().indexOf('opera') == -1)
	{
		w=width
		h=height
		
		// followmouse()
	
		document.getElementById('ttimg').src=file
		document.onmousemove=followmouse
		gettrailobj().visibility="visible"
		gettrailobj().width=w+"px"
		gettrailobj().height=h+"px"


	}
}


function followmouse(e)
{

	if(navigator.userAgent.toLowerCase().indexOf('opera') == -1)
	{

		var xcoord=180
		var ycoord=-130

		if (typeof e != "undefined")
		{
			xcoord+=e.pageX
			ycoord+=e.pageY
		}
		else if (typeof window.event !="undefined")
		{
			xcoord+=truebody().scrollLeft+event.clientX
			ycoord+=truebody().scrollTop+event.clientY
		}

		var docwidth=document.all? truebody().scrollLeft+truebody().clientWidth : pageXOffset+window.innerWidth-15
		var docheight=document.all? Math.max(truebody().scrollHeight, truebody().clientHeight) : Math.max(document.body.offsetHeight, window.innerHeight)

		if (xcoord+w+3>docwidth)
		xcoord=xcoord-w-(20*2)

		if (ycoord-truebody().scrollTop+h>truebody().clientHeight)
		ycoord=ycoord-h-20;

		gettrailobj().left=xcoord+"px"
		gettrailobj().top=ycoord+"px"

	}

}
/*fim*/

function selection(obj, set_text_default){   
    /* @author Bernardo Rufino  
     * @license Creative Commons Developing Nations: http://creativecommons.org/licenses/devnations/2.0/  
     * @description Function to manipulate the actual selection  
     * @returns It returns an object with an attribute *text* with the current selection text and  
     *        a method *setText()* that receives one argument, the text to be set in the selection.  
     * @parameters The first is the object where you want the selection (DOM or String with id), and  
     *           the second (optional), a boolean, if is true then the *setText()* method will  
     *           append the text if there's no way to replace the selection.  
     *  
     *     !Nao retire essas informacoes!  
     *     !Do not drop this information!  
    */  
    if(obj.constructor == String){
	
		obj = document.getElementById(obj);
	
	}   
	
    var set_text = (set_text_default) ? function(text){obj.value += text;} : function(){return false;};   
    var selection = {text: null, setText: set_text};   
    if(document.selection){   
        
		var range = document.selection.createRange();   
		if (range.text !=""){
		
		selection.text = range.text;   
		selection.setText = function(text){   
		range.text = text.replace(/\\r?\\n/g, "\\r\\n");   
			
		}
		}
    } else if(typeof(obj.selectionStart) != "undefined"){   
        
		selection.text = obj.value.substring(obj.selectionStart, obj.selectionEnd);   
        selection.setText = function(text){   
			if(text != null && text != ""){
            obj.value = obj.value.substring(0, obj.selectionStart) + text + obj.value.substring(obj.selectionEnd);   
			}
        }   
    } else if(window.getSelection){   
        selection.text = window.getSelection().toString();   
		 
    }   
	
    return selection;   
}  

function handleEnter (field, event) {
        var keyCode = event.keyCode ? event.keyCode : event.which ? event.which : event.charCode;
        if (keyCode == 13) {
            field.value += "<br>"
        } 
    }      


function SetBold(txt){
	if (txt != ""){
		selected = selection(txt, true);
		selected.setText("<b>" + selected.text + "</b>");  
	}
}

function SetItalic(txt){
	if (txt != ""){
		selected = selection(txt, true);
		selected.setText("<i>" + selected.text + "</i>");  
	}
}

function SetUnderline(txt){
	if (txt != ""){
		selected = selection(txt, true);
		selected.setText("<u>" + selected.text + "</u>");  
	}
}
function SetCenter(txt){
	if (txt != ""){
		selected = selection(txt, true);
		selected.setText("<center>" + selected.text + "</center>");  
	}
}
function SetRight(txt){
	if (txt != ""){
		selected = selection(txt, true);
		selected.setText("<div align='right'>" + selected.text + "</div>");  
	}
}
function SetLeft(txt){
	if (txt != ""){
		selected = selection(txt, true);
		selected.setText("<Div align='left'>" + selected.text + "</div>");  
	}
}