Draw Full Line Through Any Two Points

function perfectLine(myClip1, myClip2 ,suppliedDepth ){

//_slope: First let's find the slope of a line between the two clips
_slope:Number,
_slope = -(myClip1._y - myClip2._y)/(myClip1._x - myClip2._x);

//These variables represent the total left, right, top and bottom
//of the screen to which we will draw a line. We will use the slope that
//we just found to calculate these variables later on
var _totalLeft:Number;
var _totalRight:Number;
var endY:Number;
var staRtY:Number,
var newDeltX:Number;
// Next is where the movieClip in wich we will house our line.
//Remember that we need a MovieClip to draw a line
// (though in Flash 9 it will no longer be necessary to draw in a mc)
var drawLineInThisClip:MovieClip;

//The _stringCount is a just a variable that we will append to each line's movieclip
// Each line needs to be associated with a movieclip. Each clip, of course,
// requires its own, distinct depth-- we might after all want multiple lines.
// on the Stage and we can now assign them different depths

var _stringCount = suppliedDepth;

//The next 3 variables let you customize the following properties of our
//humbly named 'perfect lines'
//They're pretty self-explanatory
var lineThickNess = 3; // How thick the line is
var lineRGB = 0x000033; //the color of the line
var lineAlpa = 90; //The Alpha of the line



//_totalRight, not surprisingly, represents how far on the right we want to be able to draw
// Since we want to be able to draw ALL the way to the right we use 'Stage.width'
//_totalLeft is the x position on the left which is zero. Remember in Flash's
//coordinate system x values start at zero on the absolute left.

_totalRight = Stage.width;
_totalLeft = 0;


//Here is where we create the movieClip that will house our line.
drawLineInThisClip =_root.createEmptyMovieClip(('line'+_stringCount), suppliedDepth)