PowerShell: Sign into a website

i have been trying write script log website following html code 

    <div class="overlay" align="center">  	<table class="positioning" align="center">  	    <tr>  		<td>  		    <table id="credentials" align="right">  			<tr>  			    <td class="label">username&nbsp;&nbsp; </td>  			    <td><input type="text" id="752664021706226201" name="752664021706226201" value="" size="20" maxlength="255" onkeypress="if(window.event) keyvalue = event.keycode; else keyvalue = event.which; if(keyvalue == 13) { addmessage('framework', 'object', [{name: 'identifier', type: 'string', value: '752664021706226201'}, {name: 'action', type: 'string', value: 'enter'}]); sendmessagequeue();}" /></td>  			</tr>  			<tr>  			    <td class="label">password&nbsp;&nbsp; </td>  			    <td><input type="password" id="55447082617015795402" name="55447082617015795402" value="" size="20" maxlength="255" onkeypress="if(window.event) keyvalue = event.keycode; else keyvalue = event.which; if(keyvalue == 13) { addmessage('framework', 'object', [{name: 'identifier', type: 'string', value: '55447082617015795402'}, {name: 'action', type: 'string', value: 'enter'}]); sendmessagequeue();}" /></td>  			</tr>  			<tr>  			    <td>  				&nbsp;  			    </td>  			    <td>  				<div class="loginbutton" align="left">  				    		<input type="button" value="login" id="126534747619913615753"   		onclick="addmessage('framework', 'object', [{name: 'identifier', type: 'string', value: '126534747619913615753'}, {name: 'method', type: 'string', value: 'invoke'}, {name: 'action', type: 'string', value: 'click'}]); sendmessagequeue();" />  						</div>

issue id , name attributes each change script work day nothing. there way around using getelementbyid or getelementsbytagname? below code have been trying

#does not work.  $usernameid = $ie.document.getelementsbytagname("input") | where-object {$_.type -eq "password"}.value = $username      #works if id's inputted correctly before change    $ie.document.getelementbyid("11814975744662065521").value = $username  $ie.document.getelementbyid(“173258662219278287302”).value = $password   $ie.document.getelementbyid(“9636324655707186153”).click()   

this done prevent doing this.  server knows happening.  designers of site not want automate.

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\_(ツ)_/

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