//document ready
$(document).ready(initDocumentHeader);
				
	//fonction document ready
	function initDocumentHeader(){
		if($.browser.msie && $.browser.version < 7){	return;	}
		else{
			//params
			var rollOverDuration=300;
			var rollOutDuration=300;
			var rollOverAlphaLogo=0.3;
			var rollOverAlphaTitle=0.5;
									
			//cibler le logo
			$("#MJFHeaderLogo").hover(
				function () {
					//animer
					$("#MJFHeaderLogo").stop().fadeTo(rollOverDuration, rollOverAlphaLogo);
				}, 
				function () {
					//animer
					$("#MJFHeaderLogo").stop().fadeTo(rollOutDuration, 1);
				}
			);	  
			//cibler le titre
			$("#headerTitle").hover(
				function () {
					//animer
					$("#headerTitle").stop().fadeTo(rollOverDuration, rollOverAlphaTitle);
				}, 
				function () {
					//animer
					$("#headerTitle").stop().fadeTo(rollOutDuration, 1);
				}
			);	
			
			//params pour  l'image jp
			var jpRollOverDuration=300;
			var jpRollOverAlpha=0.5;
			//ciblage
			$("#imageJP").hover(
				function () {
					//animer
					$("#imageJP").stop().fadeTo(jpRollOverDuration, jpRollOverAlpha);
				}, 
				function () {
					//animer
					$("#imageJP").stop().fadeTo(jpRollOverDuration, 1);
				}
			);	  
		}
	}