function popup(url, fenetre, largeur, hauteur) {
    var coordY  = ( screen.height - hauteur ) / 2;
    var coordX  = ( screen.width - largeur ) / 2;
    window.open( url, fenetre, "top=" + coordY + ", left=" + coordX + ", width=" + largeur + ", height=" + hauteur + ", status=no, resizable=yes, location=no, directories=no, scrollbars=yes");
}

function popupUnique ( url, fenetre ) {
    popup(url, fenetre, 600, 500);
}

function echeck(str) {

    var at="@"
    var dot="."
    var lat=str.indexOf(at)
    var lstr=str.length
    var ldot=str.indexOf(dot)
    if (str.indexOf(at)==-1){
        alert("Invalid E-mail ID")
        return false
    }

    if (str.indexOf(at)==-1 || str.indexOf(at)==0 || str.indexOf(at)==lstr){
        alert("Invalid E-mail ID")
        return false
    }

    if (str.indexOf(dot)==-1 || str.indexOf(dot)==0 || str.indexOf(dot)==lstr){
        alert("Invalid E-mail ID")
        return false
    }

    if (str.indexOf(at,(lat+1))!=-1){
        alert("Invalid E-mail ID")
        return false
    }

    if (str.substring(lat-1,lat)==dot || str.substring(lat+1,lat+2)==dot){
        alert("Invalid E-mail ID")
        return false
    }

    if (str.indexOf(dot,(lat+2))==-1){
        alert("Invalid E-mail ID")
        return false
    }

    if (str.indexOf(" ")!=-1){
        alert("Invalid E-mail ID")
        return false
    }

    return true
}


/*
To get all a elements in the document with a “info-links” class.
    getElementsByClassName(document, "a", "info-links");
To get all div elements within the element named “container”, with a “col” and a “left” class.
    getElementsByClassName(document.getElementById("container"), "div", ["col", "left"]); 
*/

function getElementsByClassName(oElm, strTagName, oClassNames){
	var arrElements = (strTagName == "*" && oElm.all)? oElm.all : oElm.getElementsByTagName(strTagName);
	var arrReturnElements = new Array();
	var arrRegExpClassNames = new Array();
	if(typeof oClassNames == "object"){
		for(var i=0; i<oClassNames.length; i++){
			arrRegExpClassNames.push(new RegExp("(^|\\s)" + oClassNames[i].replace(/\-/g, "\\-") + "(\\s|$)"));
		}
	}
	else{
		arrRegExpClassNames.push(new RegExp("(^|\\s)" + oClassNames.replace(/\-/g, "\\-") + "(\\s|$)"));
	}
	var oElement;
	var bMatchesAll;
	for(var j=0; j<arrElements.length; j++){
		oElement = arrElements[j];
		bMatchesAll = true;
		for(var k=0; k<arrRegExpClassNames.length; k++){
			if(!arrRegExpClassNames[k].test(oElement.className)){
				bMatchesAll = false;
				break;
			}
		}
		if(bMatchesAll){
			arrReturnElements.push(oElement);
		}
	}
	return (arrReturnElements)
}