Appears to be some changes made to your templates css (
http://mathmotionmontreal.ca/templates/j51_oxygen/css/template.css) which is effecting your social media icons. In particular the following...
[code type=css]#search .inputbox {
background:url(\\\\\\\"../images/searchBox.png\\\\\\\"
no-repeat scroll left top transparent;
border:medium none;
height:19px;
margin:0;
padding:4px 5px 7px 30px;
width:165px;
}[/code]
Ciarán