unity3d - UCE0001: ';' expected. Insert a semicolon at the end -

i'm trying make gui.drawtexture clickable, error said "assets/script/guisettingonmenu.js(46,13): uce0001: ';' expected. insert semicolon @ end." can please me?

//make clickable rect onbutton = new rect(640, 250, 80, 40); gui.drawtexture(onbutton, onnormal); if(input.getmousebutton(0)){     if (onbutton.contains(event.current.mouseposition)){         gui.drawtexture(onbutton, onhover);     } } 

yup c# syntax in js goes

var onbutton : rect = new rect(640, 250, 80, 40);